Move pages under tldr, lint run.sh, update docs

tldr/git-shortlog

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# git shortlog
+
+> Summarizes the `git log` output.
+> More information: <https://git-scm.com/docs/git-shortlog>.
+
+- View a summary of all the commits made, grouped alphabetically by author name:
+
+`git shortlog`
+
+- View a summary of all the commits made, sorted by the number of commits made:
+
+`git shortlog -n`
+
+- View a summary of all the commits made, grouped by the committer identities (name and email):
+
+`git shortlog -c`
+
+- View a summary of the last 5 commits (i.e. specify a revision range):
+
+`git shortlog HEAD~{{5}}..HEAD`
+
+- View all users, emails and the number of commits in the current branch:
+
+`git shortlog -sne`
+
+- View all users, emails and the number of commits in all branches:
+
+`git shortlog -sne --all`