Fixed typo on plugin action description

There was a simple error but I think is need to fix to don´t confuse the plugin users.

There was a word ... então permite que você a salve "sem" seu computador ... , that means  ... then allows you to save it "without" your computer ...

After fixed it stays ... então permite que você a salve "em" seu computador ... , that means  then allows you to save it "to" your computer ...