Change button name.

Fixes ietf-tools#1032
 - Legacy-Id: 5708

Author: ejimenez

ietf/templates/nomcom/edit_position.html

@@ -7,6 +7,6 @@ <h3>{% if position %}Edit{% else %}Add{% endif %} position</h3>
 
 <form action="" method="post">
 {{ form }}
-<p><input type="submit" value="{% if position %}Edit{% else %}Add{% endif %}" /> <a href="../">Cancel</a></p>
+<p><input type="submit" value="{% if position %}Save{% else %}Add{% endif %}" /> <a href="../">Cancel</a></p>
 </form>
 {% endblock nomcom_content %}