🐛 Fix 'constructor' boundary

MaximSokolov · MaximSokolov · commit 5afff48f443d · 2016-08-04T11:50:52.000+03:00
```js
a = {
  constructorABC: {}
};
```
diff --git a/grammars/javascript.cson b/grammars/javascript.cson
@@ -416,7 +416,7 @@
     ]
   }
   {
-    'begin': '(?=\\b(constructor)\\s*)'
+    'begin': '(?=\\bconstructor\\b\\s*)'
     'end': '(?<=})'
     'patterns': [
       {
