[fenix] No issue: clean up build variants in README.
commit318781d586030023eaab7adb3aafed6102ec2e48
authorMichael Comella <michael.l.comella@gmail.com>
Thu, 6 Aug 2020 16:50:36 +0000 (6 09:50 -0700)
committerMichael Comella <mcomella@fastmail.com>
Thu, 6 Aug 2020 18:24:55 +0000 (6 11:24 -0700)
treebc13cb823bf28b9e033bf4eedbb2d6d29e199812
parent566032e11c406d940ef6c032be264f2787a521fe
[fenix] No issue: clean up build variants in README.

I adapted the more concise text from pocmo's email on build variants.
mobile/android/fenix/README.md