Fix typos in phpdoc. props TheLastCicada. fixes #24302.

git-svn-id: https://develop.svn.wordpress.org/trunk@24229 602fd350-edb4-49c9-b593-d223f7449a82

wp-includes/feed.php

@@ -391,7 +391,7 @@ function rss_enclosure() {
 			foreach ( (array) $val as $enc ) {
 				$enclosure = explode("\n", $enc);
 
-				//only get the the first element eg, audio/mpeg from 'audio/mpeg mpga mp2 mp3'
+				// only get the first element, e.g. audio/mpeg from 'audio/mpeg mpga mp2 mp3'
 				$t = preg_split('/[ \t]/', trim($enclosure[2]) );
 				$type = $t[0];