clarify key management form

dist/templates/manage/manage.html.hbs

@@ -4,7 +4,7 @@
   <form action="/manage" method="POST">
     <div class="manage">
       <input type="text" name="search_term" class="manageEmail" autofocus
-              placeholder="Enter any verified address of your key">
+              placeholder="Enter any verified e-mail address of your key">
       <button type="submit" class="manageButton button">
         Send
       </button>
@@ -12,7 +12,7 @@
   </form>
 
   <p>
-    We will send you an e-mail with a link, where you can remove any of your
+    We will send you an e-mail with a link you can use to remove any of your
     e-mail addresses from search.
   </p>
 {{/layout}}