docs: use relative links within docs (electron#37042)

docs/tutorial/forge-overview.md

@@ -33,4 +33,4 @@ template and submit a new issue.
 [(publish)]: https://www.electronforge.io/cli#publish
 [GitHub issue tracker]: https://github.com/electron/forge/issues
 [discord]: https://discord.gg/APGC3k5yaH
-[tutorial]: https://www.electronjs.org/docs/latest/tutorial/tutorial-prerequisites
+[tutorial]: ./tutorial-1-prerequisites.md

docs/tutorial/launch-app-from-url-in-another-app.md

@@ -12,7 +12,7 @@ hide_title: true
 <!-- ✍ Update this section if you want to provide more details -->
 
 This guide will take you through the process of setting your Electron app as the default
-handler for a specific [protocol](https://www.electronjs.org/docs/api/protocol).
+handler for a specific [protocol](../api/protocol.md).
 
 By the end of this tutorial, we will have set our app to intercept and handle
 any clicked URLs that start with a specific protocol. In this guide, the protocol

docs/tutorial/tray.md

@@ -13,7 +13,7 @@ hide_title: true
 <!-- ✍ Update this section if you want to provide more details -->
 
 This guide will take you through the process of creating a
-[Tray](https://www.electronjs.org/docs/api/tray) icon with
+[Tray](../api/tray.md) icon with
 its own context menu to the system's notification area.
 
 On MacOS and Ubuntu, the Tray will be located on the top
@@ -31,11 +31,11 @@ const { app, Tray, Menu, nativeImage } = require('electron')
 ```
 
 Next we will create our Tray. To do this, we will use a
-[`NativeImage`](https://www.electronjs.org/docs/api/native-image) icon,
+[`NativeImage`](../api/native-image.md) icon,
 which can be created through any one of these
-[methods](https://www.electronjs.org/docs/api/native-image#methods).
+[methods](../api/native-image.md#methods).
 Note that we wrap our Tray creation code within an
-[`app.whenReady`](https://www.electronjs.org/docs/api/app#appwhenready)
+[`app.whenReady`](../api/app.md#appwhenready)
 as we will need to wait for our electron app to finish initializing.
 
 ```js title='main.js'
@@ -64,7 +64,7 @@ tray.setContextMenu(contextMenu)
 
 The code above will create 4 separate radio-type items in the context menu.
 To read more about constructing native menus, click
-[here](https://www.electronjs.org/docs/api/menu#menubuildfromtemplatetemplate).
+[here](../api/menu.md#menubuildfromtemplatetemplate).
 
 Finally, let's give our tray a tooltip and a title.