Update cheatsheets

tldr/linux/foot

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# foot
+
+> A fast, lightweight, and minimalistic Wayland terminal emulator.
+> More information: <https://manned.org/foot>.
+
+- Spawn a terminal:
+
+`foot`
+
+- Verify your config:
+
+`foot {{[-C|--check-config]}}`
+
+- Start the server (use `footclient` to start terminal windows that connect to the server):
+
+`foot {{[-s|--server]}}`
+
+- Display help:
+
+`foot {{[-h|--help]}}`
+
+- Display version:
+
+`foot {{[-v|--version]}}`