mail/verification: fix typo

app/templates/Mail/verification.latte

@@ -7,7 +7,7 @@
 
 <p>Thank you for your registration.</p>
 
-<p>Your registration ID is {$id}. Please keep it handy – it can be used to log in to edit your entry and to identify your team during in the event of any further correspondence.</p>
+<p>Your registration ID is {$id}. Please keep it handy – it is required to log in to edit your entry, and to identify your team in the event of any further correspondence.</p>
 
 <p>You can consult the <a n:href="//Team:list">list of entrants</a> on the website to check the status of your entry. Until the registration fee is paid, you can edit your entry using the password provided below.</p>