fix typo

bubble-server/src/main/resources/message_templates/en_US/server/pre_auth/ResourceMessages.properties

@@ -306,7 +306,7 @@ button_label_forgot_password=Send reset password
 forgot_password_login_link=Back to Login
 
 # New UI Labels for Registration
-register_title=Sign Up for a Bubble=The Safest Place on the Internet.
+register_title=Sign Up for a Bubble: The Safest Place on the Internet
 register_blurb=Block behavior tracking, ads and other rude behaviour.
 register_field_label_email=Email address (will be your username)
 field_label_password=Choose Password