bug#36529: Docs say font-lock-mode should be on by default

[Eli Zaretskii]

> From: 積丹尼 Dan Jacobson <jidanni@jidanni.org>
> Cc: 36529@debbugs.gnu.org
> Date: Sat, 06 Jul 2019 23:21:54 +0800
> 
> EZ> Not here, they aren't.  Does this happen with "emacs -Q"?
> 
> $ emacs -q -Q index.html etc.
> All just black and white.
> Have to do M-x font-lock-mode
> so see any colors, here with Debian's 26.1.

Then I suggest that you take this up with the downstream Emacs package
maintainers for Debian, because Emacs built from sources here doesn't
have that problem.