Fix some verdict descriptions

britney2/excuse.py

@@ -34,9 +34,9 @@ VERDICT2DESC = {
     PolicyVerdict.REJECTED_NEEDS_APPROVAL:
         'BLOCKED: Needs an approval (either due to a freeze, the source suite or a manual hint)',
     PolicyVerdict.REJECTED_CANNOT_DETERMINE_IF_PERMANENT:
-        'BLOCKED: Maybe temporary, maybe blocked but Britney is missing information (check below or the buildds)',
+        'BLOCKED: Maybe temporary, maybe blocked but Britney is missing information (check below)',
     PolicyVerdict.REJECTED_PERMANENTLY:
-        'BLOCKED: Rejected/introduces a regression',
+        'BLOCKED: Rejected/violates migration policy/introduces a regression',
 }