fix: set edit_uri with docs subdir

docs/docs/tutorial/setup-project.md

@@ -18,15 +18,16 @@ This is the simplest MkDocs site you can make:
 
 - `docs/`
     - `index.md` - Homepage in the `docs` directory (by default).
-- `mkdocs.yml` 
+- `mkdocs.yml`
     - Config at the root - control appearance and navigation of your site.
     - See this project's [docs/mkdocs.yml](https://github.com/MichaelCurrin/mkdocs-quickstart/blob/master/docs/mkdocs.yml) file on GitHub.
-    
+
 Notes on fields for the config:
 
 - `site_name` - title of your site.
 - `site_description` - used as a description for SEO and you could use it somewhere in your template.
-- `repo_url` - for _Edit on GitHub_ button.
+- `repo_url` - for _Edit on GitHub_ button. See [docs](https://www.mkdocs.org/user-guide/configuration/#repo_url).
+- `edit_uri` - defaults to `edit/master/docs/`, which includes `docs` directory of markdown files inside your repo root. But, if the site's root is in an outer `docs` directory, then you need to _also_ add that, so paths do not break. e.g. `edit/master/docs/docs`. See [docs](https://www.mkdocs.org/user-guide/configuration/#edit_uri)
 
 
 ### Requirements file

docs/mkdocs.yml

@@ -4,6 +4,7 @@ site_name: MkDocs Quickstart
 site_description: Starter template for a MkDocs docs site on GH Pages - including CI
 
 repo_url: https://github.com/MichaelCurrin/mkdocs-quickstart
+edit_uri: edit/master/docs/docs
 
 ### Build settings ###