chore: Changes naming from source and target to base and head

Author: Ubax

.github/workflows/task-1.yaml

@@ -7,7 +7,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Lists PRs branches
-        run: echo "PR source ${{ github.base_ref }} target ${{ github.ref }}"
+        run: echo "PR base ${{ github.base_ref }} head ${{ github.head_ref }}"
         if: ${{ github.event_name == 'pull_request' }}
       - name: Lists push branch
         run: echo 'Push branch ${{ github.ref }}, commit ref ${{ github.sha }}'