[www/mpfr-4.2.2/index.html] Updated Section "Platforms Known to Support MPFR".

Added "aarch64-unknown-linux-musl". Thanks to Dennis Clarke.

www/mpfr-4.2.2/index.html

@@ -90,6 +90,7 @@
 <ul>
 <li><samp>aarch64-apple-darwin21.6.0</samp> (clang 14.0.0);</li>
 <li><samp>aarch64-unknown-linux-gnu</samp> (<acronym>gcc</acronym> 8.5.0 and 14.2.0, clang 19.1.7 on Termux/Android, <acronym>tcc</acronym> mob branch);</li>
+<li><samp>aarch64-unknown-linux-musl</samp> (<acronym>gcc</acronym> 14.2.0);</li>
 <li><samp>i686-w64-mingw32</samp> (<cite>Wine</cite>, <acronym>gcc</acronym> 14-win32);</li>
 <li><samp>mips-unknown-linux-gnu</samp> (o32 and n32 <acronym title="Application Binary Interface">ABI</acronym>, <acronym>gcc</acronym> 8.3.0);</li>
 <li><samp>powerpc-ibm-aix7.3.1.0</samp> (IBM POWER8, <acronym>gcc</acronym> 10.3.0);</li>