.github/workflows: fix whitespace in e2e config file (#6043)

.github/workflows/e2e-nightly-34x.yml

@@ -22,7 +22,7 @@ jobs:
           go-version: '1.15'
 
       - uses: actions/checkout@v2
-        with: 
+        with:
           ref: 'v0.34.x'
 
       - name: Build
@@ -55,7 +55,7 @@ jobs:
           SLACK_MESSAGE: Nightly E2E tests failed on v0.34.x
           SLACK_FOOTER: ''
 
- e2e-nightly-success: # may turn this off once they seem to pass consistently
+  e2e-nightly-success: # may turn this off once they seem to pass consistently
     needs: e2e-nightly-test-2
     if: ${{ success() }}
     runs-on: ubuntu-latest