patches.html: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

patches.html

diff --git a/patches.html b/patches.html
index 11de178..437e0c7 100644
--- a/patches.html
+++ b/patches.html
@@ -158,7 +158,7 @@
       The GNU C library developers
       don't consider
       <em>man-pages</em> to
-      be any sort of official documentation for the library.
+      be official documentation for the library.
       However, if you have a new page for Section 3 or a substantial addition
       to one of those pages, you might consider CCing
       <span class="email">libc-alpha@sourceware.org</span>;