Update shell script called by action

Script creates a branch to commit changes if any are present, then opens an issue and assigns to me. The issue create portion was failing because the --body parameter is required.

.github/workflows/create-branch-if-needed.sh

@@ -8,5 +8,5 @@ else
   git add --all
   git commit -a -m "Regenerated API clients with Kiota"
   git push --set-upstream origin $branchName
-  gh issue create --title "Validate regenerated Kiota clients in get started" --repo microsoft/kiota-samples --assignee jasonjoh
+  gh issue create --title "Validate regenerated Kiota clients in get started" --body "Changes in branch $branchName" --repo microsoft/kiota-samples --assignee jasonjoh
 fi