* lib/webrick/httpproxy.rb: [DOC] Fix typo

s/bacause/because/
[ci skip]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43990 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/webrick/httpproxy.rb

@@ -314,7 +314,7 @@ module WEBrick
       http.start do
         if @config[:ProxyTimeout]
           ##################################   these issues are
-          http.open_timeout = 30   # secs  #   necessary (maybe bacause
+          http.open_timeout = 30   # secs  #   necessary (maybe because
           http.read_timeout = 60   # secs  #   Ruby's bug, but why?)
           ##################################
         end