fix a typo

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39984 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

doc/ChangeLog-1.9.3

@@ -76917,7 +76917,7 @@ Tue May 31 15:52:45 2005  GOTOU Yuuzou  <gotoyuzo@notwork.org>
 	  break the loop if the socket reached to EOF. [ruby-talk:142285]
 
 	* lib/webrick/httpserver.rb (WEBrick::HTTPServer#run): send response
-	  without reading the whole request body if keep-alive is diabled.
+	  without reading the whole request body if keep-alive is disabled.
 	  [experimental]
 
 Mon May 30 23:48:29 2005  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>