fix code

docs/index.html

@@ -233,11 +233,7 @@
 			function autoChangeUrlLanguage( language ) {
 
 				var hash = location.hash;
-				if( !hash ){
-
-					return;
-
-				}
+				if ( hash === '' ) return;
 				var docType = hash.substr( 0, hash.indexOf( '/' ) + 1 );
 				var docLink = hash.substr( hash.indexOf( '/' ) + 1 );
 				docLink = docLink.substr( docLink.indexOf( '/' ) );