Mention that repo-create is also known as init in command-line help.

docs/how-to/set-up-backups.md

@@ -5,6 +5,7 @@ eleventyNavigation:
   parent: How-to guides
   order: 0
 ---
+
 To install borgmatic, first [install
 Borg](https://borgbackup.readthedocs.io/en/stable/installation.html), at least
 version 1.1. (borgmatic does not install Borg automatically so as to avoid

docs/reference/command-line/actions/repo-create.md

@@ -4,7 +4,6 @@ eleventyNavigation:
   key: repo-create
   parent: 🎬 Actions
 ---
-
 ```
 {% include borgmatic/command-line/repo-create.txt %}
 ```