Fix typo in require specs
Fix typo in require specs

* Update tags from $LOAD_FEATURES to $LOADED_FEATURES

nobu/rubyspec,eregon/rubyspec,nobu/rubyspec,nobu/rubyspec,ruby/spec,ruby/rubyspec,ruby/spec,eregon/rubyspec,sgarciac/spec,ruby/spec,eregon/rubyspec,sgarciac/spec,sgarciac/spec,ruby/rubyspec