docs(completion): Fix typo

Author: tony

docs/cli/completion.md

@@ -3,7 +3,7 @@
 # Completion
 
 ```{note}
-See the [click library's documentation on shell completion](https://click.palletsprojects.com/en/8.0.x/shell-completion/) for the most up to date way of connecting completion for vcspull.
+See the [click library's documentation on shell completion](https://click.palletsprojects.com/en/8.0.x/shell-completion/) for the most up to date way of connecting completion for tmuxp.
 ```
 
 :::{tab} Bash