Update commit message in export_fig sync workflow

Changed the commit message in the update_export_fig GitHub Actions workflow to clarify the sync source as 'altmany/export_fig repo'.

Author: markmikkelsen

.github/workflows/update_export_fig.yml

@@ -27,5 +27,5 @@ jobs:
           git config --global user.name "${GITHUB_ACTOR}"
           git config --global user.email "${GITHUB_ACTOR}@users.noreply.github.com"
           git add .
-          git diff-index --quiet HEAD || git commit -m "Sync from export_fig repo"
+          git diff-index --quiet HEAD || git commit -m "Sync with altmany/export_fig repo"
           git push