refractor: changed nutton name and heading

widget_group_6/announcements/templates/announcements/add.html

 {% extends "announcements/base.html" %}
 
 {% block content %}
-    <h1>Add Assignment</h1>
+    <h1>New Assignment</h1>
     <form method="POST" enctype="multipart/form-data" action="{% url 'announcements:add' %}">
         {% csrf_token %}
         {{announcement_form.media}}
@@ -10,5 +10,5 @@
         <button class="button" type="submit">Save Announcement</button> 
     </form>
     <br>
-    <button type="button"> <a href="/announcements/" id = "back"> Back to Main Announcements Page</a> </button>
+    <button type="button"> <a href="/announcements/" id = "back"> Back to Main Announcements Board</a> </button>
 {% endblock %}