ads-github-merge-all-upstream: typo in log message ("a al" rather than "a la")

[salewski]

The "a al '-p -p'" in the below message should be "a la '-p -p'":

    ads-github-merge-all-upstreams (info): [repo: "whatevrepo"] no upstream changes to merge, and "aggressive push" (a al '-p -p') not specified; skipping (okay)