Update docs/hardware_keyboard_guidelines.md

Co-Authored-By: skullydazed <skullydazed@users.noreply.github.com>

docs/hardware_keyboard_guidelines.md

@@ -30,7 +30,7 @@ Clueboard uses sub-folders for both purposes, organization and keyboard revision
 
 * [`qmk_firmware`](https://github.com/qmk/qmk_firmware/tree/master)
   * [`keyboards`](https://github.com/qmk/qmk_firmware/tree/master/keyboards)
-    * [`clueboard`](https://github.com/qmk/qmk_firmware/tree/master/keyboards/clueboard)  <-- this is the organization folder, no `rules.mk` file
+    * [`clueboard`](https://github.com/qmk/qmk_firmware/tree/master/keyboards/clueboard)  ← This is the organization directory, there's no `rules.mk` file.
       * [`60`](https://github.com/qmk/qmk_firmware/tree/master/keyboards/clueboard/60)  <-- this is a compilable keyboard, it has a `rules.mk` file.
       * [`66`](https://github.com/qmk/qmk_firmware/tree/master/keyboards/clueboard/66)  <-- this is also compilable, it uses `DEFAULT_FOLDER` to specify `rev3` as the default revision
         * [`rev1`](https://github.com/qmk/qmk_firmware/tree/master/keyboards/clueboard/66/rev1)  <-- compilable, `make clueboard/66/rev1`