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

tldr/cd

@@ -0,0 +1,33 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# cd
+
+> Change the current working directory.
+> More information: <https://manned.org/cd>.
+
+- Go to the specified directory:
+
+`cd {{path/to/directory}}`
+
+- Go up to the parent of the current directory:
+
+`cd ..`
+
+- Go to the home directory of the current user:
+
+`cd`
+
+- Go to the home directory of the specified user:
+
+`cd ~{{username}}`
+
+- Go to the previously chosen directory:
+
+`cd -`
+
+- Go to the root directory:
+
+`cd /`