land rapid7#8466 update to docs for is_known_pipename

Author: h00die

documentation/modules/exploit/linux/samba/is_known_pipename.md

@@ -32,6 +32,7 @@ Verified on:
 6. Ubuntu 14.04.5 x64 (Samba 4.3.9)
 7. Ubuntu 15.04 (Samba 4.1.13)
 8. Ubuntu 16.04 (Samba 4.3.11)
+   * 1:4.3.11+dfsg-0ubuntu0.16.04.3 and older are vulnerable, fixed in [2:4.3.11+dfsg-0ubuntu0.16.04.7](https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.16.04.7)
 9. Fedora 24 (Samba 4.4.13)
 
 Currently not working against: