Update CONTRIBUTING.md [skip ci]
Update CONTRIBUTING.md [skip ci]

Readme fixes for links
nemerle/Segs,nemerle/Segs,nemerle/Segs,broxen/Segs,broxen/Segs,nemerle/Segs,Segs/Segs,Segs/Segs,nemerle/Segs,Segs/Segs,Segs/Segs,Segs/Segs,nemerle/Segs,broxen/Segs,Segs/Segs,broxen/Segs,broxen/Segs,broxen/Segs,nemerle/Segs,broxen/Segs,Segs/Segs