Update docs/upgrades/1.0.md

Author: kasinskas

docs/upgrades/1.0.md

@@ -91,7 +91,7 @@ Make sure any renative versions referenced in your `renative.json` are updated t
  "templateConfig": {
     "name": "@rnv/template-starter",
     "version": "1.0.0"
-  },,
+  },
 ```
 After the update first thing you should do is to include a reference to JSON schema provided by ReNative at the top of your renative.json file:
 ```json