Update test-accessibility-alt-text-bot.yml (#3)

* Update test-accessibility-alt-text-bot.yml

### What

I need to checkout this repo before finding the action

* Update test-accessibility-alt-text-bot.yml

* use action.yml main

* remove extra step

Author: kendallgassner

.github/workflows/test-accessibility-alt-text-bot.yml

@@ -13,5 +13,5 @@ jobs:
     runs-on: ubuntu-latest
     if: ${{ github.event.issue || github.event.pull_request && github.event.comment.user.login != 'accessibility-bot' }}
     steps:
-      - name: Get private action 'github/accessibility-alt-text-bot'
-        uses: ./.github/actions/github/accessibility-alt-text-bot
+      - name: Check alt text
+        uses: github/accessibility-alt-text-bot@main