Update the CaskAlreadyInstalledError with new reinstall command

e.g. this changes:

```
To re-install google-chrome, run:
  brew cask uninstall --force google-chrome && brew cask install google-chrome
```

To:

```
To re-install google-chrome, run:
  brew cask reinstall google-chrome
```

Library/Homebrew/cask/lib/hbc/exceptions.rb

@@ -41,7 +41,7 @@ module Hbc
     def reinstall_message
       <<-EOS.undent
         To re-install #{token}, run:
-          brew cask uninstall --force #{token} && brew cask install #{token}
+          brew cask reinstall #{token}
       EOS
     end
   end