Strip the newline when reading prId

Author: HarshCasper

ephemeral/startup/action.yml

@@ -58,7 +58,8 @@ runs:
     - name: Setup preview name
       shell: bash
       run: |
-        prId=$(<pr-id.txt)
+        prId=$(tr -d '\r\n' < pr-id.txt)
+        echo "PR ID is: $prId"
         repoName=$GITHUB_REPOSITORY
         repoNameCleaned=$(echo -n "$repoName" | tr -c '[:alnum:]' '-')
         previewName=preview-$repoNameCleaned-$prId