Invalid contribution link in PR template

[Paulchen5]

Description

The following link is invalid:

cli/.github/PULL_REQUEST_TEMPLATE.md

Lines 7 to 8 in 903e9b3

	For additional information on our contributing process, read our contributing
	guide https://docs.docker.com/opensource/code/

Updated version is probably: https://docs.docker.com/contribute/

Reproduce

Expected behavior

No response

docker version

-

docker info

-

Additional Info

No response