Update updated KPrepublic boards to be prepared for the update (#15040)

keyboards/kprepublic/bm60poker/readme.md

@@ -8,6 +8,6 @@ A 60% hotswap inswitch RGB (north facing) keyboard from KP Republic.
 
 Make example for this keyboard (after setting up your build environment):
 
-    make kprepublic/bm60poker:default
+    make kprepublic/bm60poker/rev1: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/kprepublic/bm60rgb/readme.md

@@ -8,6 +8,6 @@ A 60% hotswap inswitch RGB keyboard from KP Republic.
 
 Make example for this keyboard (after setting up your build environment):
 
-    make kprepublic/bm60rgb:default
+    make kprepublic/bm60rgb/rev1: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/kprepublic/bm60rgb_iso/readme.md

@@ -10,7 +10,7 @@ A 60% ISO hotswap inswitch RGB keyboard.
 
 Make example for this keyboard (after setting up your build environment):
 
-    make kprepublic/bm60rgb_iso:default
+    make kprepublic/bm60rgb_iso/rev1:default
 
 Flashing example for this keyboard:
 

keyboards/kprepublic/bm65rgb/readme.md

@@ -10,11 +10,11 @@ A 65% hotswap in switch RGB keyboard from KPRepublic.
 
 Make example for this keyboard (after setting up your build environment):
 
-    make kprepublic/bm65rgb:default
+    make kprepublic/bm65rgb/rev1:default
 
 Flashing example for this keyboard:
 
-    make kprepublic/bm65rgb:default:flash
+    make kprepublic/bm65rgb/rev1:default:flash
 
 To reset the board into bootloader mode, do one of the following: