Remove errant ctrl-F character from docs.

README.md

@@ -355,7 +355,7 @@ git clone ssh://git@projects.torsion.org:3022/witten/borgmatic.git
 ```
 
 Then, install borgmatic
-"[editable](https://pip.pypa.io/en/stable/reference/pip_install/#editable-installs)"
+"[editable](https://pip.pypa.io/en/stable/reference/pip_install/#editable-installs)"
 so that you can easily run borgmatic commands while you're hacking on them to
 make sure your changes work.