Fix ruby-align: space-around support due to an erroneous space

Change-Id: I4c25cd71484f50ce5b037b3ab381694d057dcf91

Author: alex4401

src/Sanitizer/StylePropertySanitizer.php

@@ -2143,7 +2143,7 @@ protected function cssRuby1( $matcherFactory ) {
 			] ),
 			'ruby-merge' => new KeywordMatcher( [ 'separate', 'merge', 'auto' ] ),
 			'ruby-align' => new KeywordMatcher( [
-				'start', 'center', 'space-between', 'space-around '
+				'start', 'center', 'space-between', 'space-around'
 			] ),
 			'ruby-overhang' => new KeywordMatcher( [ 'auto', 'none' ] ),
 		];