cheat: add page (#3721)

pages/common/cheat.md

@@ -0,0 +1,24 @@
+# cheat
+
+> Create and view interactive cheat sheets on the command-line.
+> More information: <https://github.com/cheat/cheat>.
+
+- Show example usage of a command:
+
+`cheat {{command}}`
+
+- Edit the cheat sheet for a command:
+
+`cheat -e {{command}}`
+
+- List the available cheat sheets:
+
+`cheat -l`
+
+- Search available the cheat sheets for a specified command name:
+
+`cheat -s {{command}}`
+
+- Get the current cheat version:
+
+`cheat -v`