Update cheatsheets

tldr/linux/systemctl-hibernate

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# systemctl hibernate
+
+> Hibernate the system by saving the current state to disk and powering off.
+> More information: <https://www.freedesktop.org/software/systemd/man/systemctl.html#hibernate>.
+
+- Hibernate the system immediately:
+
+`systemctl hibernate`
+
+- Force hibernation even if inhibitors are present:
+
+`systemctl hibernate --force`
+
+- Hibernate the system without sending a message to logged-in users:
+
+`systemctl hibernate --no-wall`