Make clearing follow the object:action naming of the rest of the tasks

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@3699 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

railties/lib/tasks/tmp.rake

 namespace :tmp do
   desc "Clear session, cache, and socket files from tmp/"
-  task :clear => [ "tmp:sesions:clear",  "tmp:cache:clear", "tmp:sockets:clear"]
+  task :clear => [ "tmp:sessions:clear",  "tmp:cache:clear", "tmp:sockets:clear"]
 
   desc "Creates tmp directories for sessions, cache, and sockets"
   task :create do