Update _index.md by fixing broken link (#1221)

Signed-off-by: Farshad Davoudi <f.davoudi.r@outlook.com>
Co-authored-by: halspang <70976921+halspang@users.noreply.github.com>

daprdocs/content/en/dotnet-sdk-docs/dotnet-client/_index.md

@@ -105,7 +105,7 @@ Console.WriteLine("Published deposit event!");
 ```
 
 - For a full list of state operations visit [How-To: Publish & subscribe]({{< ref howto-publish-subscribe.md >}}).
-- Visit [.NET SDK examples](https://github.com/dapr/dotnet-sdk/tree/master/examples/client/PublishSubscribe) for code samples and instructions to try out pub/sub
+- Visit [.NET SDK examples](https://github.com/dapr/dotnet-sdk/tree/master/examples/Client/PublishSubscribe) for code samples and instructions to try out pub/sub
 
 ### Interact with output bindings