Example placeholder was pushed out

backend/templates/edit.html

@@ -40,8 +40,8 @@
                     </div>
                     <fieldset class="pure-group">
                         {{ render_field(form.headers, rows=5, placeholder="Example
-                        Cookie: foobar
-                        User-Agent: wonderbra 1.0") }}
+Cookie: foobar
+User-Agent: wonderbra 1.0") }}
                         <span class="pure-form-message-inline">
                             Note: ONLY used by Basic fast Plaintext/HTTP Client
                           </span>