ci/update: cleanup summary step

Author: MattSturgeon

.github/workflows/update.yml

@@ -176,24 +176,25 @@ jobs:
 
       - name: Print summary
         if: steps.pr.outputs.pull-request-number
+        env:
+          pr_num: ${{ steps.pr.outputs.pull-request-number }}
+          pr_url: ${{ steps.pr.outputs.pull-request-url }}
+          pr_branch: ${{ steps.pr.outputs.pull-request-branch }}
+          head: ${{ steps.pr.outputs.pull-request-head-sha }}
+          operation: ${{ steps.pr.outputs.pull-request-operation }}
         run: |
-          num="${{ steps.pr.outputs.pull-request-number }}"
-          pr_url="${{ steps.pr.outputs.pull-request-url }}"
-          pr_branch="${{ steps.pr.outputs.pull-request-branch }}"
-          head="${{ steps.pr.outputs.pull-request-head-sha }}"
-          operation="${{ steps.pr.outputs.pull-request-operation }}"
-
+          short=${head:0:6}
           # stdout
-          echo "${head:0:6} pushed to ${pr_branch}"
-          echo "${pr} was ${operation}."
-
-          # markdown summary
-          echo "## ${{ github.ref_name }}" >> $GITHUB_STEP_SUMMARY
-          echo >> $GITHUB_STEP_SUMMARY
-          echo "\`${head:0:6}\` pushed to \`${pr_branch}\`" >> $GITHUB_STEP_SUMMARY
-          echo >> $GITHUB_STEP_SUMMARY
-          echo "[#${num}](${pr_url}) was ${operation}." >> $GITHUB_STEP_SUMMARY
-          echo >> $GITHUB_STEP_SUMMARY
+          echo "${short} pushed to ${pr_branch}"
+          echo "#${pr_num} was ${operation}: ${pr_url}"
+          ( # markdown summary
+            echo "## ${{ github.ref_name }}"
+            echo
+            echo "\`${short}\` pushed to \`${pr_branch}\`"
+            echo
+            echo "[#${pr_num}](${pr_url}) was ${operation}."
+            echo
+          ) >> $GITHUB_STEP_SUMMARY
 
       - name: Print cancellation summary
         if: (!steps.pr.outputs.pull-request-number)