Links to coding conventions broken

[thomasa88]

Issue Description

Go to the Contribution guidelines at https://github.com/qmk/qmk_firmware/blob/869b7d9ae63f2d5990934f938e44ecfe6d1d9e1f/docs/contributing.md

Try to follow the links to the coding conventions:

404 - page not found
The 869b7d9 branch of qmk_firmware does not contain the path docs/coding_conventions_c.

https://github.com/qmk/qmk_firmware/blob/869b7d9ae63f2d5990934f938e44ecfe6d1d9e1f/docs/coding_conventions_c
https://github.com/qmk/qmk_firmware/blob/869b7d9ae63f2d5990934f938e44ecfe6d1d9e1f/docs/coding_conventions_python

[tzarc]

The docs are written to target https://docs.qmk.fm, not through GitHub.
https://docs.qmk.fm/contributing has valid, working links to both pages, for instance.

[thomasa88]

Oops, my mistake.