Docs: minor tweak

docs/index.html

@@ -89,7 +89,7 @@
 			var panel = document.getElementById( 'panel' );
 			var viewer = document.getElementById( 'viewer' );
 
-			var html = '<h1>three.js <span style="font-size: 50%; vertical-align: super;">r' + REVISION + '</span></h1>';
+			var html = '<h1>three.js<span style="font-size: 50%; vertical-align: super;"> r' + REVISION + '</span></h1>';
 
 			for ( var category in list ) {