fix a typo [ci skip]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55864 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-08-11 15:00:09 +00:00 · 2016-08-11 15:00:09 +00:00 · afd800fd29
--- a/2
+++ b/2
@ -29,7 +29,7 @@ Wed Aug 10 15:35:03 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>

 Tue Aug  9 17:50:00 2016  Kenta Murata  <mrkn@mrkn.jp>

-	* hash.c (rb_hash_map_v, rb_hash_map_v_bang): impelement Hash#map_v and
+	* hash.c (rb_hash_map_v, rb_hash_map_v_bang): implement Hash#map_v and
 	  Hash#map_v! [Feature #12512] [ruby-core:76095]

 	* test/ruby/test_hash.rb: add tests for above change.