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

tldr/linux/i3

@@ -0,0 +1,37 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# i3
+
+> A dynamic tiling window manager.
+> More information: <https://i3wm.org/docs/userguide.html>.
+
+- Start i3 (Note that a pre-existing window manager must not be open when this command is run):
+
+`i3`
+
+- Open a new terminal window:
+
+`<Super> + <Return>`
+
+- Create a new workspace:
+
+`<Super> + <Shift> + {{number}}`
+
+- Switch to workspace number `n`:
+
+`<Super> + {{n}}`
+
+- Open new window horizontally:
+
+`<Super> + h`
+
+- Open new window vertically:
+
+`<Super> + v`
+
+- Open application (type out application name after executing command):
+
+`<Super> + D`