Fix link to github repo for 'Edit this page' link

At the bottom of the Introduction page, https://realworld-docs.netlify.app/docs/intro, the link to the github repo seems to be broken.

It is sending us to:

https://github.com/gothinkster/realworld/tree/main/docs/docs/docs/intro.mdx

I think it should be:

https://github.com/gothinkster/realworld/blob/main/apps/documentation/docs/intro.mdx

So, I have made a pull request here. I am not sure if this is the correct place for this change to be made.

I notice that there may be a similar problem a few lines below with the link to the blog on line 33, but I could not find the blog so I have not investigated further.

apps/documentation/docusaurus.config.js

@@ -25,7 +25,7 @@ const config = {
         docs: {
           sidebarPath: require.resolve('./sidebars.js'),
           // Remove this to remove the "edit this page" links.
-          editUrl: 'https://github.com/gothinkster/realworld/tree/main/docs/docs/',
+          editUrl: 'https://github.com/gothinkster/realworld/blob/main/apps/documentation/docs/',
         },
         blog: {
           showReadingTime: true,