Update exercise title in workflow file

Author: arilivigni

.github/workflows/3-last-step.yml

@@ -64,4 +64,4 @@ jobs:
     uses: skills/exercise-toolkit/.github/workflows/[email protected]
     with:
       issue-url: ${{ needs.find_exercise.outputs.issue-url }}
-      exercise-title: "(replace-me: Exercise title)"
+      exercise-title: "Democratize Tribal Knowledge Using Copilot Spaces"