Fix obj name in ok-to-test PR report

.github/workflows/e2e.yml

@@ -160,7 +160,7 @@ jobs:
       with:
         github-token: ${{ secrets.GITHUB_TOKEN }}
         script: |
-          const { data: pull } = await github.pulls.get({
+          const { data: pull } = await github.pull_requests.get({
             ...context.repo,
             pull_number: process.env.number
           });