[DOC] add links to `Object#hash`

add links to `Object#hash` to each #`hash` methods rdocs.
[Fixes GH-567]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45329 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 0 deletions

diff --git a/gc.c b/gc.c
index 9a6a8c7eef..fdc388f3a3 100644
--- a/gc.c
+++ b/gc.c
@@ -2375,6 +2375,8 @@ id2ref(VALUE obj, VALUE objid)
  *
  *  Any hash value that exceeds the capacity of a Fixnum will be truncated
  *  before being used.
+ *
+ *  See also Object#hash.
  */
 
 VALUE