email tweaks

src/registrar/templates/emails/domain_invitation.txt

@@ -16,8 +16,8 @@ associated with the following email address: {{ invitee_email_address }}
 Login.gov provides a simple and secure process for signing in to many government
 services with one account. If you don’t already have one, follow these steps to create
 your Login.gov account <https://login.gov/help/get-started/create-your-account/>.
-{% endif %}
 
+{% endif %}
 
 DOMAIN MANAGEMENT
 As a .gov domain manager, you can add or update information like name servers. You’ll

src/registrar/templates/emails/domain_manager_deleted_notification.txt

@@ -11,6 +11,7 @@ MANAGER REMOVED: {{ manager_removed.email }}
 
 WHY DID YOU RECEIVE THIS EMAIL? 
 You’re listed as a domain manager for {{ domain.name }}, so you’ll receive a notification whenever a domain manager is removed from that domain.
+
 If you have questions or concerns, reach out to the person who removed the domain manager or reply to this email.
 
 THANK YOU