[Keyboard] move @yynmt 's boards into /yynmt (#16075)

keyboards/yynmt/dozen0/readme.md

@@ -10,6 +10,6 @@ Hardware Availability: links to where you can find this hardware
 
 Make example for this keyboard (after setting up your build environment):
 
-    make dozen0:default
+    make yynmt/dozen0:default
 
 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).

keyboards/yynmt/kagamidget/readme.md

@@ -9,6 +9,6 @@ Hardware Supported:  KagaMidget PCBs, ProMicro supported
 
 Make example for this keyboard (after setting up your build environment):
 
-    make kagamidget:default
+    make yynmt/kagamidget:default
 
 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).