www 66.html arm->armv7

[Oliver Marugg]

Hi

Only a small addition to www 66.html, change architecture from arm to 
armv7 on line 89. -oliver

@@ -89 +89
       as the base system compiler.
     <li>The powerpc architecture is now provided with
       <a href="https://man.openbsd.org/clang.1";>clang(1)</a>, in
-      addition to aarch64, amd64, arm, i386, mips64el, sparc64.
+      addition to aarch64, amd64, armv7, i386, mips64el, sparc64.