Merge pull request #106 from github/cschleiden/dash

Change rule to continue matching expression tokens

Author: cschleiden

syntaxes/expressions.tmGrammar.json

@@ -11,7 +11,7 @@
   ],
   "repository": {
     "expression": {
-      "match": "\\$\\{\\{(.*?)\\}\\}",
+      "match": "[^|\\G]?\\$\\{\\{(.*?)\\}\\}",
       "name": "meta.embedded.block.github-actions-expression",
       "captures": {
         "1": {