Note on MathML not working in most browsers can be removed/changed

[aslakr]

I guess the following:

asciimath.github.io/index.html

Lines 124 to 128 in 59f09a1

	<p>
	<mark><strong>Attention:</strong> Currently this only works in
	Firefox and Safari.
	</mark>
	</p>

soon can be removed https://www.igalia.com/2023/01/10/Igalia-Brings-MathML-Back-to-Chromium.html