Fix minio docs (#901)

* Add minio links to sidebar

* Minio plugin page

* Fixed some typos

docs/content/add-plugins/spaces.md

@@ -6,7 +6,7 @@ In order to work with images in Medusa, you need a file service plugin responsib
 
 At this point, you should have an instance of our store engine running. If not, we have a [full guide](https://docs.medusa-commerce.com/tutorial/set-up-your-development-environment) for setting up your local environment.
 
-### Set up up DigitalOcean
+### Set up DigitalOcean
 
 #### Create a Space