better comment

Author: amihaiemil

src/main/resources/responses_en.properties

@@ -5,7 +5,8 @@ newIssue.comment=@%s thank you for reporting this. I'll assign someone to take c
 newIssueUnassigned.comment=@%s thank you for reporting this. Unfortunately, @%s is not a contributor \
                            with the required role (%s), that's why I unassigned them. \n\n\
                            I will assign a contributor to take care of it soon.
-newPullRequest.comment=@%s thank you for your Pull Request. I'll assign someone to review it soon.
+newPullRequest.comment=@%s thank you for your Pull Request. I'll assign someone to review it soon. \n\n \
+                       If this PR solves a ``todo`` from the code, please don't forget to remove it.
 reopened.comment=@%s thanks for reopening this, I'll find someone to take a look at it. \n\
                  However, please keep in mind that reopening tickets is a bad practice. Next time, please \
                  open a new ticket.