[Keyboard] move @drhigsby 's boards into /drhigsby (#16041)

keyboards/drhigsby/bkf/readme.md

@@ -10,12 +10,12 @@ BKF, Base Kit Forty, is a 40% style keyboard that is fully compatbile with a sta
 
 Make example for this keyboard (after setting up your build environment):
 
-    make bkf:default
+    make drhigsby/bkf:default
 
 To place this keyboard into bootloader mode, press the reset button on the PCB or short the RST and GND pins on the pro micro. 
 
 Flashing example for this keyboard:
 
-    make bkf:default:flash
+    make drhigsby/bkf: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).

keyboards/drhigsby/dubba175/readme.md

@@ -10,6 +10,6 @@ Dubba175 is a 10u wide ortholinear keyboard featuring 2x 1.75u spacebars as the
 
 Make example for this keyboard (after setting up your build environment):
 
-    make dubba175:default
+    make drhigsby/dubba175: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).