Update cheatsheets

tldr/yadm-init

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# yadm-init
+
+> Initialize a new, empty repository for tracking dotfiles.
+> The repository is stored in `$HOME/.local/share/yadm/repo.git`.
+> More information: <https://yadm.io/docs/getting_started>.
+
+- Execute:
+
+`yadm init`
+
+- Override the worktree:
+
+`yadm init -w {{path/to/worktree_folder}}`
+
+- Overwrite an existing repository:
+
+`yadm init -f {{path/to/local_repository}}`