RFR: 1813: URLs printed by Skara should have ".git" at the end of the repo name

[Zhao Song]

In this patch, `.git` is added to the URLs printed by Skara.

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Commit messages:
 - SKARA-1813

Changes: https://git.openjdk.org/skara/pull/1467/files
 Webrev: https://webrevs.openjdk.org/?repo=skara&pr=1467&range=00
  Issue: https://bugs.openjdk.org/browse/SKARA-1813
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/skara/pull/1467.diff
  Fetch: git fetch https://git.openjdk.org/skara pull/1467/head:pull/1467

PR: https://git.openjdk.org/skara/pull/1467