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

tldr/git-whatchanged

@@ -0,0 +1,22 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# git whatchanged
+
+> Show what has changed with recent commits or files.
+> See also `git log`.
+> More information: <https://git-scm.com/docs/git-whatchanged>.
+
+- Display logs and changes for recent commits:
+
+`git whatchanged`
+
+- Display logs and changes for recent commits within the specified time frame:
+
+`git whatchanged --since="{{2 hours ago}}"`
+
+- Display logs and changes for recent commits for specific files or directories:
+
+`git whatchanged {{path/to/file_or_directory}}`