Rename tutte_coxeter_36e -> tutte_coxeter_36k

It was e for edge, now k for keys. Why? I'm toying with ideas
for a full Tutte Coxeter graph (30 vertices/nodes/GPIO pins,
45 edges/switches) incuding 42 keys plus a rotary encoder
(these act like three switches: clockwise, anticlockwise,
press - so 42 edges for normal keys + 3 edges for a rotary
encoder gives 42 + 3 = 45 edges) which could be named with
suffix 43ke.

README.md

@@ -10,7 +10,7 @@ I am also using this to host QMK firmware for any of my own keyboard PCBs (with
 `preparation_command` [tweak](/.github/workflows/build_binaries.yaml) to the GitHub
 Actions to compile these online):
 
-* [Tutte-Coxeter 36e](keyboards/tutte_coxeter_36e/readme.md) - my no-diode single
+* [Tutte-Coxeter 36k](keyboards/tutte_coxeter_36k/readme.md) - my no-diode single
   PCB design for a monoblock split 3x5_3 design using Graph Theory (topology) to
   avoid ghosting. This has a sparse 13x13 scanning matrix (using 26 GPIO pins)
   for 36 keys with 6-key rollover (the USB HID limit).

keyboards/tutte_coxeter_36k/keyboard.json

@@ -1,6 +1,6 @@
 {
     "manufacturer": "Peter J. A. Cock",
-    "keyboard_name": "tutte_coxeter_36e",
+    "keyboard_name": "tutte_coxeter_36k",
     "maintainer": "peterjc",
     "bootloader": "rp2040",
     "diode_direction": "COL2ROW",

keyboards/tutte_coxeter_36k/readme.md

@@ -1,4 +1,4 @@
-# Tutte Coxeter 36e
+# Tutte Coxeter 36k
 
 ![Partial Tutte-Coxeter Graph (26/30 vertices, 36/45 edges)](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhvS5QfAl7YotptMtpu0nG8XOHOsqG2vocUFF2sRgrn_QwAcUQNhDkctHt_42rQor3Bb5tbAW6FiOsYqv2craP086HMTuAqWk9U0A4yOeEsQkhyphenhyphenUxoayJWf5e-N3_Jg1TC1p9YAiVPTK02pEVCUu3hl72REIk5BAjXgZGoF7T-NWQ28iRirwFs6yzFzAe0/w200-h194/Screenshot%202025-05-28%20at%2014.59.35.png)
 
@@ -12,16 +12,16 @@ The first physical PCB for this is designed to fit in the [Gamma Omega keyboard]
 and use the same Raspberry Pi Pico based microcontroller board.
 
 * Keyboard Maintainer: [Peter J. A. Cock](https://github.com/peterjc)
-* Hardware Supported: Tutte Coxeter 36e (single PCB) with Raspberry Pi Pico
+* Hardware Supported: Tutte Coxeter 36k (single PCB) with Raspberry Pi Pico
 * Hardware Availability: https://github.com/peterjc/gamma-omega
 
 Make example for this keyboard (after setting up your build environment):
 
-    make tutte_coxeter_36e:default
+    make tutte_coxeter_36k:default
 
 Flashing example for this keyboard:
 
-    make tutte_coxetter_36e:default:flash
+    make tutte_coxetter_36k: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).
 

qmk.json

@@ -1,6 +1,6 @@
 {
     "userspace_version": "1.1",
     "build_targets": [
-        ["tutte_coxeter_36e", "default"]
+        ["tutte_coxeter_36k", "default"]
     ]
 }