chore(markdown): Updated plugin docs

markdown/dev/reference/plugins/notches/en.md

@@ -0,0 +1,43 @@
+---
+title: "@freesewing/plugin-notches"
+---
+
+The **@freesewing/plugin-notces** plugin provides the following [snippets](/reference/api/snippets):
+
+ - [notch](/reference/api/snippets/notch)
+ - [bnotch](/reference/api/snippets/bnotch)
+
+<Example part="plugin_notches">
+An example of the button, buttonhole, buttonhole-start, buttonhole-end, snap-stud, and snap-socket snippets
+</Example>
+
+<Tip>
+
+The notches plugin is part of our [plugin-bundle](/reference/plugins/bundle)
+
+</Tip>
+
+## Installation
+
+```bash
+npm install @freesewing/plugin-notches
+```
+
+## Usage
+
+Like all [build-time plugins](/guides/plugins/types-of-plugins#build-time-plugins), you
+load them by passing them to the [freesewing.Design](/reference/api/design) super-constructor:
+
+```js
+import freesewing from "@freesewing/core";
+import notches from "@freesewing/plugin-notches";
+import config from "../config";
+
+const Pattern = new freesewing.Design(config, notches);
+```
+
+Now you can use the
+[notch](/reference/api/snippets/notch) and  
+[bnotch](/reference/api/snippets/buttonhole)
+snippets in your designs.
+