Update cheatsheets

tldr/lesskey

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# lesskey
+
+> Customize keybindings for `less`.
+> Note: This command has been deprecated.
+> More information: <https://manned.org/lesskey>.
+
+- Compile key bindings from a source file:
+
+`lesskey {{path/to/lesskey_file}}`
+
+- Compile key bindings and write to a specific output file:
+
+`lesskey {{[-o|--output]}} {{path/to/output}} {{path/to/lesskey_file}}`
+
+- Display version:
+
+`lesskey {{[-V|--version]}}`