Docs: Fix typo in some DocBlocks.

See #51800.

git-svn-id: https://develop.svn.wordpress.org/trunk@49785 602fd350-edb4-49c9-b593-d223f7449a82

src/js/_enqueues/lib/image-edit.js

@@ -302,7 +302,7 @@
 				}
 			}
 
-			// Reset size to it's original state.
+			// Reset size to its original state.
 			if ( setSize ) {
 				if ( !history.length ) {
 					this.hold.w = this.hold.ow;

src/js/_enqueues/wp/customize/controls.js

@@ -7712,7 +7712,7 @@
 			/**
 			 * Trash the current changes.
 			 *
-			 * Revert the Customizer to it's previously-published state.
+			 * Revert the Customizer to its previously-published state.
 			 *
 			 * @since 4.9.0
 			 *

src/wp-includes/rest-api/class-wp-rest-server.php

@@ -1008,7 +1008,7 @@ class WP_REST_Server {
 	}
 
 	/**
-	 * Matches a request object to it's handler.
+	 * Matches a request object to its handler.
 	 *
 	 * @access private
 	 * @since 5.6.0