Update KBD67 readme so that it mentions the KBD65 PCB (#5143)

* The code in this directory supports the KBD65

* Update readme.md

* Update readme.md

* Clear up the confusion between the kbd67/kbd65 naming.

* Update keyboards/kbdfans/kbd67/readme.md

Co-Authored-By: Hackerpilot <briancschott@gmail.com>

keyboards/kbdfans/kbd67/readme.md

@@ -3,6 +3,8 @@
 A 65% keyboard sold in two variants. Rev1 was a typical keyboard that had to be soldered together, supporting multiple layouts.
 Months later, a new version with hotswap was sold. **Firmware files from one, will not work on the other.** Please use the `.hex` appropriate for your board.
 
+The rev1 PCB for the KBD67 is sold under the name "KBD65."
+
 Keyboard Maintainer: [MechMerlin](https://github.com/mechmerlin)  
 Hardware Supported: KBD67  
 Hardware Availability: KBDFans

keyboards/kbdfans/kbd67/rev1/readme.md

@@ -3,8 +3,8 @@
 65% keyboard with blocker.  
 
 Keyboard Maintainer: [MechMerlin](https://github.com/mechmerlin)  
-Hardware Supported: KBD67 PCB  
+Hardware Supported: KBD67 PCB (Sometimes sold under the name "KBD65")  
-Hardware Availability: [KBDFans](https://kbdfans.cn/products/coming-soon-kbd67-mechanical-keyboard-diy-kit)
+Hardware Availability: KBDFans [Keyboard Kit](https://kbdfans.cn/products/coming-soon-kbd67-mechanical-keyboard-diy-kit), [PCB](https://kbdfans.cn/collections/65/products/kbd65-65-custom-mechanical-keyboard-pcb)
 
 Make example for this keyboard (after setting up your build environment):