Fix typo "this this server"

Summary: Closes T15611

Test Plan: Carefully read.

Reviewers: O1 Blessed Committers, avivey

Reviewed By: O1 Blessed Committers, avivey

Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno

Maniphest Tasks: T15611

Differential Revision: https://we.phorge.it/D25404

src/applications/auth/guidance/PhabricatorAuthProvidersGuidanceEngineExtension.php

@@ -53,9 +53,8 @@ final class PhabricatorAuthProvidersGuidanceEngineExtension
         ->setMessage($message);
     } else {
       $message = pht(
-        'Anyone who can browse to this this server will be able to '.
-        'register an account. To add email domain restrictions, configure '.
-        '%s.',
+        'Anyone who can browse to this server will be able to register '.
+        'an account. To add email domain restrictions, configure %s.',
         $domains_link);
 
       $results[] = $this->newGuidance('core.auth.email-domains.off')

src/applications/phame/storage/PhameBlog.php

@@ -154,7 +154,7 @@ final class PhameBlog extends PhameDAO
       $href = PhabricatorEnv::getProductionURI(
         '/config/edit/policy.allow-public/');
       return pht(
-        'For custom domains to work, this this server must be '.
+        'For custom domains to work, this server must be '.
         'configured to allow the public access policy. Configure this '.
         'setting %s, or ask an administrator to configure this setting. '.
         'The domain can be specified later once this setting has been '.