Posts, Post Types: Switch the order of arguments for implode() in the_meta() to match the function notation.

Props loyaltymanufaktur.
Fixes #47481.

git-svn-id: https://develop.svn.wordpress.org/trunk@45491 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/post-template.php

@@ -1104,7 +1104,7 @@ function the_meta() {
 			}
 
 			$values = array_map( 'trim', get_post_custom_values( $key ) );
-			$value  = implode( $values, ', ' );
+			$value  = implode( ', ', $values );
 
 			$html = sprintf(
 				"<li><span class='post-meta-key'>%s</span> %s</li>\n",