.github: use shorter name for backport tracker action

Signed-off-by: Patrick Donnelly <[email protected]>

Author: batrick

.github/workflows/create-backport-trackers.yml

@@ -1,5 +1,6 @@
 ---
-name: Create backport trackers for trackers in "Pending Backport" state
+name: Issue Backporting
+description: Create backport trackers for trackers in "Pending Backport" state
 on:
   # To manually trigger this: https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#workflow_dispatch
   # View past runs and output: https://github.com/ceph/ceph/actions/workflows/create-backport-trackers.yml