new(guide): Add mkdocs install & preview instructions to CONTRIBUTING.md (#1494)

.github/PULL_REQUEST_TEMPLATE.md

@@ -14,9 +14,9 @@
 
 <!-- ## Learning
 
-If you're adding a new Custom Format, make sure you follow the [Radarr/Sonarr Custom Format (JSON) Guidelines](https://github.com/TRaSH-Guides/Guides/blob/master/.github/CONTRIBUTING.md). -->
+If you're adding a new Custom Format, make sure you follow the [Radarr/Sonarr Custom Format (JSON) Guidelines](https://github.com/TRaSH-Guides/Guides/blob/master/CONTRIBUTING.md). -->
 
 ## Requirements
 
-- [ ] These changes meet the standards for [contributing](https://github.com/TRaSH-Guides/Guides/blob/master/.github/CONTRIBUTING.md).
+- [ ] These changes meet the standards for [contributing](https://github.com/TRaSH-Guides/Guides/blob/master/CONTRIBUTING.md).
 - [ ] I have read the [code of conduct](https://github.com/TRaSH-Guides/Guides/blob/master/.github/CODE_OF_CONDUCT.md).

CONTRIBUTING.md

@@ -144,4 +144,40 @@ When updating or adding a new CF the test case url (`trash_regex`) needs to be p
 
 ## Recommendations
 
-- use [VSCode](https://code.visualstudio.com/) for editing with the following extension [markdownlint](https://marketplace.visualstudio.com/items?itemName=DavidAnson.vscode-markdownlint)
+Use [VSCode](https://code.visualstudio.com/) for editing. VS Code should recommend extensions to you
+based on the `.vscode/extensions.json` file; you should install all of them.
+
+## Preview Docs Locally
+
+### Prerequisites
+
+These prerequisites are taken from the [mkdocs installation instructions][mkdocinstall].
+
+- Install a recent version of [Python 3](https://www.python.org/).
+- `pip` is also required, but should come with Python. Run `pip --version` to check if its available
+  and working. See the [installation instructions](https://pip.pypa.io/en/stable/installation/).
+
+[mkdocinstall]: https://www.mkdocs.org/user-guide/installation/
+
+### Mkdocs Installation
+
+First, install mkdocs:
+
+```bash
+pip install mkdocs
+```
+
+Then, install dependent modules using the command below. This command should be run in the root
+directory of the repository (i.e. where the `requirements.txt` file is). If the `pip` command does
+not work, refer to the mkdocs installation page linked in the Prerequisite section above.
+
+```bash
+pip install -r docs/requirements.txt
+```
+
+Once everything is installed, run the command below to start a local dev server to preview your
+changes to mkdocs:
+
+```bash
+mkdocs serve
+```

docs/Bazarr/scripts/index.md

@@ -3,7 +3,7 @@
 !!! note ""
     Here you will find a collection of Scripts you can use with Bazarr.
 
-    Most of them are provided by other users, if you got a script you want to share don't hesitate to create a [PR](https://github.com/TRaSH-Guides/Guides/blob/master/.github/CONTRIBUTING.md) for it
+    Most of them are provided by other users, if you got a script you want to share don't hesitate to create a [PR](https://github.com/TRaSH-Guides/Guides/blob/master/CONTRIBUTING.md) for it
 
 ## 2 to 3 language code