docs : make modifications to all md files to make them compatible with mkdocs

all markdown files must have a single H1 heading at the top.

Signed-off-by: Damien Martin <damlobster@gmail.com>

Update CNAME

docs/CANBUS_protocol.md

@@ -1,9 +1,11 @@
+# CANBUS protocol
+
 This document describes the protocol Klipper uses to communicate over
 [CAN bus](https://en.wikipedia.org/wiki/CAN_bus). See
 [CANBUS.md](CANBUS.md) for information on configuring Klipper with CAN
 bus.
 
-# Micro-controller id assignment
+## Micro-controller id assignment
 
 Klipper uses only CAN 2.0A standard size CAN bus packets, which are
 limited to 8 data bytes and an 11-bit CAN bus identifier. In order to
@@ -19,7 +21,7 @@ that is used during id assignment. This identifier can exceed the
 length of one CAN packet, so a hash function is used to generate a
 unique 6-byte id (`canbus_uuid`) from the factory id.
 
-# Admin messages
+## Admin messages
 
 Admin messages are used for id assignment. Admin messages sent from
 host to micro-controller use the CAN bus id `0x3f0` and messages sent
@@ -27,7 +29,7 @@ from micro-controller to host use the CAN bus id `0x3f1`. All
 micro-controllers listen to messages on id `0x3f0`; that id can be
 thought of as a "broadcast address".
 
-## CMD_QUERY_UNASSIGNED message
+### CMD_QUERY_UNASSIGNED message
 
 This command queries all micro-controllers that have not yet been
 assigned a `canbus_nodeid`. Unassigned micro-controllers will respond
@@ -36,7 +38,7 @@ with a RESP_NEED_NODEID response message.
 The CMD_QUERY_UNASSIGNED message format is:
 `<1-byte message_id = 0x00>`
 
-## CMD_SET_NODEID message
+### CMD_SET_NODEID message
 
 This command assigns a `canbus_nodeid` to the micro-controller with a
 given `canbus_uuid`.
@@ -44,12 +46,12 @@ given `canbus_uuid`.
 The CMD_SET_NODEID message format is:
 `<1-byte message_id = 0x01><6-byte canbus_uuid><1-byte canbus_nodeid>`
 
-## RESP_NEED_NODEID message
+### RESP_NEED_NODEID message
 
 The RESP_NEED_NODEID message format is:
 `<1-byte message_id = 0x20><6-byte canbus_uuid>`
 
-# Data Packets
+## Data Packets
 
 A micro-controller that has been assigned a nodeid via the
 CMD_SET_NODEID command can send and receive data packets.