Replace http://man7.org links with https://man7.org links.

I suspect the way http:// dies is that browsers just interpret it as
https:// anyway, but there's no reason not to just bulk fix all these at
source.

Change-Id: I38fa91728846d7c33207ef1bdadd4910eac9e941
diff --git a/libc/include/fnmatch.h b/libc/include/fnmatch.h
index 1788a27..e3b17fd 100644
--- a/libc/include/fnmatch.h
+++ b/libc/include/fnmatch.h
@@ -60,7 +60,7 @@
 #define FNM_FILE_NAME    FNM_PATHNAME
 
 /**
- * [fnmatch(3)](http://man7.org/linux/man-pages/man3/fnmatch.3.html) matches `__string` against
+ * [fnmatch(3)](https://man7.org/linux/man-pages/man3/fnmatch.3.html) matches `__string` against
  * the shell wildcard `__pattern`.
  *
  * Returns 0 on success, and returns `FNM_NOMATCH` on failure.