docs/status.md: link to github.

We've had discussions about <monetary.h> (which wasn't previously
mentioned here at all, an oversight) and robust mutexes on github that
are worth linking to.

Bug: https://github.com/android/ndk/issues/1181
Bug: https://github.com/android/ndk/issues/1182
Test: N/A
Change-Id: If0d2c28757a3cbfffc358e8847dc4de1a67d9001
diff --git a/docs/status.md b/docs/status.md
index fb88dd2..6f358ea 100644
--- a/docs/status.md
+++ b/docs/status.md
@@ -32,13 +32,16 @@
 
 Missing functionality:
   * `<aio.h>`
+  * `<monetary.h>`. See
+    [discussion](https://github.com/android/ndk/issues/1182).
   * `<wordexp.h>`
   * Thread cancellation (`pthread_cancel`). Unlikely to ever be implemented
     because of the difficulty and cost of implementing it, and the difficulty
     of using it correctly. See
     [This is why we can't have safe cancellation points](https://lwn.net/Articles/683118/)
     for more about thread cancellation.
-  * Robust mutexes
+  * Robust mutexes. See
+    [discussion](https://github.com/android/ndk/issues/1181).
 
 Run `./libc/tools/check-symbols-glibc.py` in bionic/ for the current
 list of POSIX functions implemented by glibc but not by bionic.