update settings.json

.vscode/settings.json

@@ -21,5 +21,8 @@
   "editor.codeActionsOnSave": {
     "source.fixAll.eslint": true,
     "source.fixAll.markdownlint": true
-  }
+  },
+  "githubPullRequests.ignoredPullRequestBranches": [
+    "master"
+  ]
 }