git: openjdk/jdk: 8325731: Installation instructions for Debian/Ubuntu don't mention autoconf

[Johannes Bechberger]

Changeset: c3c1cdd1
Author:    Johannes Bechberger <jbechberger at openjdk.org>
Date:      2024-02-13 12:31:31 +0000
URL:       https://git.openjdk.org/jdk/commit/c3c1cdd1b017654469f214c62457cde248474f2f

8325731: Installation instructions for Debian/Ubuntu don't mention autoconf

Reviewed-by: ihse

! doc/building.html
! doc/building.md