Update the documentation links

Updates the example and dependency links in the documentation, to use URLs that
are valid within the monorepo.

Signed-off-by: Gergely Nagy <algernon@keyboard.io>

doc/plugin/LEDEffects.md

@@ -61,11 +61,11 @@ The plugin provides a single method on each of the included effect objects:
 
 ## Dependencies
 
-* [Kaleidoscope-LEDControl](https://github.com/keyboardio/Kaleidoscope-LEDControl)
+* [Kaleidoscope-LEDControl](LEDControl.md)
 
 ## Further reading
 
 Starting from the [example][plugin:example] is the recommended way of getting
 started with the plugin.
 
- [plugin:example]: https://github.com/keyboardio/Kaleidoscope-LEDEffects/blob/master/examples/LEDEffects/LEDEffects.ino
+ [plugin:example]: ../../examples/LEDEffects/LEDEffects.ino

doc/plugin/TriColor.md

@@ -4,7 +4,7 @@ The `TriColor` effect extension is a part of
 the [`LEDEffects`][plugin:ledeffects] library, not a stand-alone base library of
 its own. It is used to implement the effects in that library.
 
- [plugin:ledeffects]: https://github/keyboardio/Kaleidoscope-LEDEffects
+ [plugin:ledeffects]: LEDEffects.md
 
 It is a class that can be used to create LED effects that all follow a similar
 pattern: alphas and similar in one color; modifiers, special keys, and half the