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/ifaddrs.h b/libc/include/ifaddrs.h
index 7c0dcbf..c4d0e10 100644
--- a/libc/include/ifaddrs.h
+++ b/libc/include/ifaddrs.h
@@ -72,7 +72,7 @@
 #define ifa_dstaddr ifa_ifu.ifu_dstaddr
 
 /**
- * [getifaddrs(3)](http://man7.org/linux/man-pages/man3/getifaddrs.3.html) creates a linked list
+ * [getifaddrs(3)](https://man7.org/linux/man-pages/man3/getifaddrs.3.html) creates a linked list
  * of `struct ifaddrs`. The list must be freed by freeifaddrs().
  *
  * Returns 0 and stores the list in `*__list_ptr` on success,
@@ -83,7 +83,7 @@
 int getifaddrs(struct ifaddrs* _Nullable * _Nonnull __list_ptr) __INTRODUCED_IN(24);
 
 /**
- * [freeifaddrs(3)](http://man7.org/linux/man-pages/man3/freeifaddrs.3.html) frees a linked list
+ * [freeifaddrs(3)](https://man7.org/linux/man-pages/man3/freeifaddrs.3.html) frees a linked list
  * of `struct ifaddrs` returned by getifaddrs().
  *
  * Available since API level 24.