Change Details

I checked that at least on github the RST link to md docs work properly. I also checked that links on the bitcoinabc.org work (https://www.bitcoinabc.org/electrum/contrib/release.html)

I checked that at least on github the RST link to md docs work properly. The new link to the main contributing.md can be tested only after this lands. I also checked that links on the bitcoinabc.org work (https://www.bitcoinabc.org/electrum/contrib/release.html)

I checked that at least on github the RST link to md docs work properly. The new link to the main contributing.md can be tested only after this lands. I also checked that links on the bitcoinabc.org work (https://www.bitcoinabc.org/electrum/contrib/release.html)