Fix typo in optparse library [ci skip] [Fix GH-956]

* lib/optparse.rb: [DOC] Fix typo.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51152 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Sun Jul  5 23:54:10 2015  mizokami  <suzunatsu@yahoo.com>
+
+	* lib/optparse.rb: [DOC] Fix typo.
+
 Sun Jul  5 18:25:37 2015  Eric Wong  <e@80x24.org>
 
 	* gc.c (gc_profile_record_get): fix spelling error in keys

lib/optparse.rb

@@ -151,7 +151,7 @@
 #
 # - Date  -- Anything accepted by +Date.parse+
 # - DateTime -- Anything accepted by +DateTime.parse+
-# - Time -- Anyting accepted by +Time.httpdate+ or +Time.parse+
+# - Time -- Anything accepted by +Time.httpdate+ or +Time.parse+
 # - URI  -- Anything accepted by +URI.parse+
 # - Shellwords -- Anything accepted by +Shellwords.shellwords+
 # - String -- Any non-empty string