fix typo

Author: titusfortner

.github/workflows/ci.yml

@@ -40,7 +40,7 @@ jobs:
         id: check-targets
         run: ./scripts/github-actions/check-bazel-targets.sh
         env:
-          COMMIT_RANGE: ${{ github.event_name == 'pull_request' && format('{0}..{1}', gitgithub.base_ref, github.head_ref) || format('{0}..{1}', github.event.before, github.sha) }}
+          COMMIT_RANGE: ${{ github.event_name == 'pull_request' && format('{0}..{1}', github.base_ref, github.head_ref) || format('{0}..{1}', github.event.before, github.sha) }}
 
   dotnet:
     name: .NET