Merge branch 'bs/asciidoctor-installation-hints'

Doc update. * bs/asciidoctor-installation-hints: INSTALL: note on using Asciidoctor to build doc

Junio C Hamano committed Mar 30, 2021 at 14:35 UTC aab55b1d6e1541f70ff364ce7b2c98f6a8157084

No changes.