Added and updated comments

Source/Prism/Events/BackgroundEventSubscription.cs

@@ -49,7 +49,7 @@ public BackgroundEventSubscription(IDelegateReference actionReference, IDelegate
         }
 
         /// <summary>
-        /// Invokes the specified <see cref="System.Action{TPayload}"/> in an asynchronous thread by using a <see cref="ThreadPool"/>.
+        /// Invokes the specified <see cref="System.Action{TPayload}"/> in an asynchronous thread by using a <see cref="System.Threading.ThreadPool"/>.
         /// </summary>
         /// <param name="action">The action to execute.</param>
         /// <param name="argument">The payload to pass <paramref name="action"/> while invoking it.</param>

Source/Prism/Events/EventSubscription.cs

@@ -50,7 +50,7 @@ public Action Action
         /// <remarks>
         /// If <see cref="Action"/>is no longer valid because it was
         /// garbage collected, this method will return <see langword="null" />.
-        /// Otherwise it will return a delegate that evaluates the <see cref="Filter"/> and if it
+        /// Otherwise it will return a delegate that evaluates the <see cref="EventSubscription{TPayload}.Filter"/> and if it
         /// returns <see langword="true" /> will then call <see cref="InvokeAction"/>. The returned
         /// delegate holds a hard reference to the <see cref="Action"/> target
         /// <see cref="Delegate">delegates</see>. As long as the returned delegate is not garbage collected,

Source/Xamarin/Prism.Forms/Navigation/INavigationService.cs

@@ -26,9 +26,9 @@ public interface INavigationService
         /// Initiates navigation to the target specified by the <paramref name="uri"/>.
         /// </summary>
         /// <param name="uri">The Uri to navigate to</param>
-        /// <remarks>Navigation parameters can be provided in the Uri and by using the <paramref name="parameters"/>.</remarks>
+        /// <remarks>Navigation parameters can be provided in the Uri and by using the <paramf name="parameters"/>.</remarks>
         /// <example>
-        /// Navigate(new Uri("MainPage?id=3&name=brian", UriKind.RelativeSource), parameters);
+        /// Navigate(new Uri("MainPage?id=3&amp;name=brian", UriKind.RelativeSource), parameters);
         /// </example>
         Task<INavigationResult> NavigateAsync(Uri uri);
 
@@ -39,7 +39,7 @@ public interface INavigationService
         /// <param name="parameters">The navigation parameters</param>
         /// <remarks>Navigation parameters can be provided in the Uri and by using the <paramref name="parameters"/>.</remarks>
         /// <example>
-        /// Navigate(new Uri("MainPage?id=3&name=brian", UriKind.RelativeSource), parameters);
+        /// Navigate(new Uri("MainPage?id=3&amp;name=brian", UriKind.RelativeSource), parameters);
         /// </example>
         Task<INavigationResult> NavigateAsync(Uri uri, INavigationParameters parameters);
 

Source/Xamarin/Prism.Forms/Navigation/INavigationServiceExtensions.cs

@@ -57,7 +57,7 @@ public static Task<INavigationResult> NavigateAsync(this INavigationService navi
         /// <returns><see cref="INavigationResult"/> indicating whether the request was successful or if there was an encountered <see cref="Exception"/>.</returns>
         /// <remarks>Navigation parameters can be provided in the Uri and by using the <paramref name="parameters"/>.</remarks>
         /// <example>
-        /// NavigateAsync(new Uri("MainPage?id=3&name=brian", UriKind.RelativeSource), parameters);
+        /// NavigateAsync(new Uri("MainPage?id=3&amp;name=brian", UriKind.RelativeSource), parameters);
         /// </example>
         public static Task<INavigationResult> NavigateAsync(this INavigationService navigationService, Uri uri, INavigationParameters parameters = null, bool? useModalNavigation = null, bool animated = true)
         {
@@ -102,7 +102,7 @@ public static Task<INavigationResult> GoBackAsync(this INavigationService naviga
         /// <returns><see cref="INavigationResult"/> indicating whether the request was successful or if there was an encountered <see cref="Exception"/>.</returns>
         /// <remarks>Navigation parameters can be provided in the Uri and by using the <paramref name="parameters"/>.</remarks>
         /// <example>
-        /// NavigateAsync("MainPage?id=3&name=dan", ("person", person), ("foo", bar));
+        /// NavigateAsync("MainPage?id=3&amp;name=dan", ("person", person), ("foo", bar));
         /// </example>
         public static Task<INavigationResult> NavigateAsync(this INavigationService navigationService, string name, params (string Key, object Value)[] parameters)
         {
@@ -117,7 +117,7 @@ public static Task<INavigationResult> NavigateAsync(this INavigationService navi
         /// <returns><see cref="INavigationResult"/> indicating whether the request was successful or if there was an encountered <see cref="Exception"/>.</returns>
         /// <remarks>Navigation parameters can be provided in the Uri and by using the <paramref name="parameters"/>.</remarks>
         /// <example>
-        /// NavigateAsync(new Uri("MainPage?id=3&name=dan", UriKind.RelativeSource), ("person", person), ("foo", bar));
+        /// NavigateAsync(new Uri("MainPage?id=3&amp;name=dan", UriKind.RelativeSource), ("person", person), ("foo", bar));
         /// </example>
         public static Task<INavigationResult> NavigateAsync(this INavigationService navigationService, Uri uri, params (string Key, object Value)[] parameters)
         {

Source/Xamarin/Prism.Forms/Navigation/PageNavigationService.cs

@@ -263,9 +263,8 @@ protected virtual Task<INavigationResult> NavigateInternal(string name, INavigat
         /// Initiates navigation to the target specified by the <paramref name="uri"/>.
         /// </summary>
         /// <param name="uri">The Uri to navigate to</param>
-        /// <remarks>Navigation parameters can be provided in the Uri and by using the <paramref name="parameters"/>.</remarks>
         /// <example>
-        /// Navigate(new Uri("MainPage?id=3&name=brian", UriKind.RelativeSource), parameters);
+        /// NavigateAsync(new Uri("MainPage?id=3&amp;name=brian", UriKind.RelativeSource));
         /// </example>
         public virtual Task<INavigationResult> NavigateAsync(Uri uri)
         {
@@ -279,7 +278,7 @@ public virtual Task<INavigationResult> NavigateAsync(Uri uri)
         /// <param name="parameters">The navigation parameters</param>
         /// <remarks>Navigation parameters can be provided in the Uri and by using the <paramref name="parameters"/>.</remarks>
         /// <example>
-        /// Navigate(new Uri("MainPage?id=3&name=brian", UriKind.RelativeSource), parameters);
+        /// Navigate(new Uri("MainPage?id=3&amp;name=brian", UriKind.RelativeSource), parameters);
         /// </example>
         public virtual Task<INavigationResult> NavigateAsync(Uri uri, INavigationParameters parameters)
         {
@@ -300,7 +299,7 @@ Task<INavigationResult> IPlatformNavigationService.NavigateAsync(Uri uri, INavig
         /// <param name="animated">If <c>true</c> the transition is animated, if <c>false</c> there is no animation on transition.</param>
         /// <remarks>Navigation parameters can be provided in the Uri and by using the <paramref name="parameters"/>.</remarks>
         /// <example>
-        /// Navigate(new Uri("MainPage?id=3&name=brian", UriKind.RelativeSource), parameters);
+        /// Navigate(new Uri("MainPage?id=3&amp;name=brian", UriKind.RelativeSource), parameters);
         /// </example>
         protected async virtual Task<INavigationResult> NavigateInternal(Uri uri, INavigationParameters parameters, bool? useModalNavigation, bool animated)
         {