Include commas highlighting in container condition

Author: jacobcassidy

src/vscode-css/grammars/css.cson

@@ -828,6 +828,9 @@
     'begin': '\\G'
     'end': '(?=\\s*[{;])'
     'patterns': [
+      {
+        'include': '#commas'
+      }
       {
         'include': '#comment-block'
       }

syntaxes/css.tmLanguage.json

@@ -840,6 +840,9 @@
       "begin": "\\G",
       "end": "(?=\\s*[{;])",
       "patterns": [
+        {
+          "include": "#commas"
+        },
         {
           "include": "#comment-block"
         },