grammer edit

index.html

@@ -12,7 +12,7 @@
         <h1>Pop-Up Image Plug-in Example</h1>
         <h2>Click on an image bellow</h2>
         <img class="pop-up-img" src="./images/oregon-tree.jpg" alt="Image of a tree in an Oregon forest">
-        <img class="pop-up-img" src="./images/oregon-beach.jpg" alt="Image a beach on the Oregon coast">
+        <img class="pop-up-img" src="./images/oregon-beach.jpg" alt="Image of a beach on the Oregon coast">
         <img class="pop-up-img" src="./images/kady-poodle.jpg" alt="Image of Kady the poodle at Nauset Beach in Massachusetts">
         <img class="pop-up-img" src="./images/gale-meadows-vt.jpg" alt="Image of a sunset at Gale Meadows Pond in Vermont">
         <div class="pop-up-frame">