fix(#936): updates discord links. (#937)

* discord link updated to working one on home page

* reverted yarn.lock file

* updated to medusajs url

docs/content/guides/fulfillment-api.md

@@ -68,4 +68,4 @@ If the shipping option is configured to dynamically calculate the price of the t
 
 ## What's next?
 
-Now that you have an overview of the Fulfillment API you can start developing your own fulfillment plugin. For a guide on how to create plugins [check this guide](https://docs.medusajs.com/guides/plugins). If you have questions or issues please feel free to [join our Discord server](https://discord.gg/H6naACAK) for direct access to the engineering team.
+Now that you have an overview of the Fulfillment API you can start developing your own fulfillment plugin. For a guide on how to create plugins [check this guide](https://docs.medusajs.com/how-to/plugins). If you have questions or issues please feel free to [join our Discord server](https://discord.gg/medusajs) for direct access to the engineering team.

www/docs/docusaurus.config.js

@@ -86,7 +86,7 @@ module.exports = {
             },
             {
               label: "Discord",
-              href: "https://discord.gg/H6naACAK",
+              href: "https://discord.gg/medusajs",
             },
             {
               label: "Twitter",