[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/string.c b/string.c
index d41a5314e1..075876f47a 100644
--- a/string.c
+++ b/string.c
@@ -2338,6 +2338,8 @@ rb_str_hash_cmp(VALUE str1, VALUE str2)
  *    str.hash   -> fixnum
  *
  * Return a hash based on the string's length, content and encoding.
+ *
+ * See also Object#hash.
  */
 
 static VALUE