Docs: Use 3-digit, x.x.x style semantic versioning for two @since entries.

Follow-up to [41626], [56541].

See #58833.

git-svn-id: https://develop.svn.wordpress.org/trunk@56774 602fd350-edb4-49c9-b593-d223f7449a82

src/js/_enqueues/admin/common.js

@@ -2112,7 +2112,7 @@ $( function( $ ) {
  * stops animations for all GIFs on the page with the class 'plugin-icon' or 
  * plugin icon images in the update plugins table.
  *
- * @since 6.4
+ * @since 6.4.0
  */
 (function() {
 	// Private variables and methods.

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

@@ -7800,11 +7800,11 @@
 			},
 
 			/**
-			 * Builds the front preview url with the current state of customizer.
+			 * Builds the front preview URL with the current state of customizer.
 			 *
-			 * @since 4.9
+			 * @since 4.9.0
 			 *
-			 * @return {string} Preview url.
+			 * @return {string} Preview URL.
 			 */
 			getFrontendPreviewUrl: function() {
 				var previewer = this, params, urlParser;