[Keyboard] Update kyria make path example (#13720)

Co-authored-by: filterpaper <filterpaper@localhost>

keyboards/splitkb/kyria/readme.md

@@ -10,11 +10,11 @@ Hardware Availability: [splitkb.com](https://splitkb.com) and partners.
 
 Make example for this keyboard (after setting up your build environment):
 
-    make kyria:default
+    make splitkb/kyria:default
 
 Example of flashing this keyboard:
 
-    make kyria/rev1:default:flash
+    make splitkb/kyria/rev1:default:flash
 
 See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).