* NEWS: Fix typo.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59134 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

NEWS

@@ -85,7 +85,7 @@ with all sufficient information, see the ChangeLog file or Redmine
     (same as "literal".freeze in Ruby 2.1+) [Feature #13295]
   * String#{casecmp,casecmp?} now return nil for non-string arguments
     instead of raising a TypeError. [Bug #13312]
-  * String##delete_prefix is added to remove prefix [Feature #12694]
+  * String#delete_prefix is added to remove prefix [Feature #12694]
   * String#delete_prefix! is added to remove prefix destructively [Feature #12694]
 
 === Stdlib updates (outstanding ones only)