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

tldr/git-credential

@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# git credential
+
+> Retrieve and store user credentials.
+> More information: <https://git-scm.com/docs/git-credential>.
+
+- Display credential information, retrieving the username and password from configuration files:
+
+`echo "{{url=http://example.com}}" | git credential fill`
+
+- Send credential information to all configured credential helpers to store for later use:
+
+`echo "{{url=http://example.com}}" | git credential approve`
+
+- Erase the specified credential information from all the configured credential helpers:
+
+`echo "{{url=http://example.com}}" | git credential reject`