Fixup a few minor documentation issues

Added some newlines

Left a FIXME in LanguageNameIndexer.php

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Change-Id: I884b423d3812ddb964a6a70f75a6331a73371165

data/LanguageNameIndexer.php

@@ -39,7 +39,7 @@ class LanguageNameIndexer extends Maintenance {
 		foreach ( $languages as $code => $name ) {
 			$all[$code][strtolower( $name )] = true;
 			$langnames = LanguageNames::getNames( $code, 0, 2 );
-			foreach ( $langnames as $code => $name ) {
+			foreach ( $langnames as $code => $name ) { // FIXME: Variable pollution
 				$all[$code][] = strtolower( $name );
 			}
 		}