Fix comment blocks (#4001)

Summary:
Without this definition, VSCode doesn't recognize the embedded language inside of a JS file. It only does syntax highlighting, nothing more.

Fixes #3998 (comment)

Pull Request resolved: #4001

Test Plan:
Imported from GitHub, without a `Test Plan:` line.

**Static Docs Preview: relay**
|[Full Site](https://our.intern.facebook.com/intern/staticdocs/eph/D37660496/V5/relay/)|

|**Modified Pages**|

Reviewed By: josephsavona

Differential Revision: D37660496

Pulled By: captbaritone

fbshipit-source-id: 868a839b4ce56f68962b0f1f84c30121d4ba6a9a

vscode-extension/package.json

@@ -1,7 +1,7 @@
 {
   "name": "relay",
   "displayName": "Relay GraphQL",
-  "version": "1.0.2",
+  "version": "1.1.0",
   "description": "Relay-powered IDE experience",
   "repository": {
     "type": "git",
@@ -52,7 +52,10 @@
           "source.tsx"
         ],
         "scopeName": "inline.graphql",
-        "path": "./grammars/graphql.js.json"
+        "path": "./grammars/graphql.js.json",
+        "embeddedLanguages": {
+          "meta.embedded.block.graphql": "graphql"
+        }
       }
     ],
     "commands": [