Update the PR template to stress the need for tests even more.
Update the PR template to stress the need for tests even more.

w0rp/ale,adriaanzon/ale,IngoHeimbach/ale,IngoHeimbach/ale,neersighted/ale,esran/ale,hernot/ale,neersighted/ale,IngoHeimbach/ale,w0rp/ale,doits/ale,w0rp/ale,hernot/ale,neersighted/ale,hernot/ale