chore: Update links to mkdocs-simple docsite

And also make them correspond to the version of mkdocs-simple that
  this package is currently built on top of.

mkdocs_semiliterate/plugin.py

@@ -1,4 +1,4 @@
-""" md
+r""" md
 ## Usage
 
 Once this plugin is [installed](../README.md#installation), just replace
@@ -6,7 +6,10 @@ the plugin name `simple` with `semiliterate` in your `mkdocs.yml` file.
 It accepts all of the same parameters, so `mkdocs` will still work as before,
 and you will have immediate access to all of the following extensions.
 (Note that this documentation assumes a familiarity with the
-[usage](https://althack.dev/mkdocs-simple-plugin/v{! ../setup.cfg { extract: {start: 'mkdocs~=', stop: '(\d*\.\d*\.?\d*)'}, ensurelines: false} !}/mkdocs_simple_plugin/plugin/)
+[usage](https://althack.dev/mkdocs-simple-plugin/v{! ../setup.cfg {
+  extract: {start: 'mkdocs~=', stop: '(\d*\.\d*\.?\d*)'},
+  ensurelines: false
+} !}/mkdocs_simple_plugin/plugin/)
 of the `simple` plugin.)
 """