Fix spelling errors

Spotted by Stefan Fercot

Author: mhagander

template.jinja/confreg/checkin_landing.html

@@ -34,7 +34,7 @@ <h2>Native app</h2>
 
 <h2>Web app</h2>
 <p>
-  If yuo do not have access to the native app, or if you are using a
+  If you do not have access to the native app, or if you are using a
   different platform, you can also use the small web app to process
   checkins.
 </p>

template/membership/admin_email_list.html

@@ -6,7 +6,7 @@ <h1>Member emails</h1>
 
 <p>
   From this page you can send an email to all active members, and also view all previously sent emails.
-  If yuo want to send email to individual membesr, yuo can do it from the <a href="/admin/membership/members/">member list</a>.
+  If you want to send email to individual membesr, you can do it from the <a href="/admin/membership/members/">member list</a>.
 </p>
 
 <p>