[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/range.c b/range.c
index f522a8ae41..b4a2bd40ed 100644
--- a/range.c
+++ b/range.c
@@ -250,6 +250,8 @@ range_eql(VALUE range, VALUE obj)
  * Compute a hash-code for this range. Two ranges with equal
  * begin and end points (using <code>eql?</code>), and the same
  * #exclude_end? value will generate the same hash-code.
+ *
+ * See also Object#hash.
  */
 
 static VALUE