[8u-dev] RfA: 8135002: Fix or remove broken links in objectMonitor.cpp comments

[david buck]

Hi!

Please approve my backport of this trivial change from jdk9 to jdk8.

bug: https://bugs.openjdk.java.net/browse/JDK-8135002

jdk9 review thread: 
http://mail.openjdk.java.net/pipermail/hotspot-runtime-dev/2015-September/015817.html

jdk9 changeset: 
http://hg.openjdk.java.net/jdk9/hs-rt/hotspot/rev/f74b3ce62e1f

Patch applies cleanly as-is.

Cheers,
-Buck