Trailing whitespace in messages

[Nikerabbit]

There are two message definitions with trailing whitespace.

Trailing whitespace is not supported in translatewiki.net (because it's not supported in MediaWiki pages).

Please remove the trailing whitespace. If it needs to be preserved, try to do that in the code instead of the message.

Wikimedia:Twinkle-prompt-reason-restore/en
'Please specify a reason for the       | 'Please specify a reason for the      
revert:                                | revert:'                              
'                                      |                                       

Wikimedia:Twinkle-summary-prompt/en
'An optional comment for the edit      | 'An optional comment for the edit     
summary:                               | summary:'                             
'                                      |