update the wording of emails

app/views/submitter_mailer/documents_copy_email.html.erb

@@ -3,7 +3,7 @@
 <% else %>
   <p>Hi there,</p>
   <p>Please check the copy of your "<%= @submitter.submission.template.name %>" submission in the email attachments.</p>
-  <p>Alternatively, you can download the copy using:</p>
+  <p>Alternatively, you can download your copy using:</p>
   <% @documents.each do |document| %>
     <ul>
       <li>

app/views/submitter_mailer/invitation_email.html.erb

@@ -5,7 +5,7 @@
   <% end %>
 <% else %>
   <p>Hi there,</p>
-  <p>You have been invited to submit the "<%= @submitter.submission.template.name %>" form</p>
+  <p>You have been invited to submit the "<%= @submitter.submission.template.name %>" form.</p>
   <p><%= link_to 'Submit Form', submit_form_url(slug: @submitter.slug, t: SubmissionEvents.build_tracking_param(@submitter, 'click_email')) %></p>
   <p>Please contact us by replying to this email if you didn't request this.</p>
   <p>