feat: added npm2yarn package (#1347)

docs/content/add-plugins/spaces.md

@@ -26,8 +26,8 @@ Navigate to API in the left sidebar. Generate a new Spaces access key. This shou
 
 First, install the plugin using your preferred package manager:
 
-```
-yarn add medusa-file-spaces
+```bash npm2yarn
+npm install medusa-file-spaces
 ```
 
 Then configure your `medusa-config.js` to include the plugin alongside the required options: