fix dereferences in django templates

edx_proctoring/templates/proctoring/proctoring_launch_callback.html

@@ -162,7 +162,7 @@
     <div class="steps-container">
       <div class="body-container">
         <h3>{% blocktrans %} Your Proctoring Session Has Started {% endblocktrans %}</h3>
-        <p>{% blocktrans %} From this point in time, you must follow the <a href="{{link_urls.get('online_proctoring_rules','#')}}">online proctoring rules</a> to pass the proctoring review for your exam. {% endblocktrans %}</p>
+        <p>{% blocktrans %} From this point in time, you must follow the <a href="{{link_urls.online_proctoring_rules}}">online proctoring rules</a> to pass the proctoring review for your exam. {% endblocktrans %}</p>
 
         <div class="alert">
           {% blocktrans %}

edx_proctoring/templates/proctoring/seq_proctored_exam_footer.html

@@ -2,16 +2,20 @@
 <div class="faq-proctoring-exam">
   <h4> {% trans "See Also" %} </h4>
     <p>
-    {% blocktrans %}
-      <a class="footer-link" href="{{link_urls.get('faq','#')}}">
+      <a class="footer-link" href="{{link_urls.faq}}">
+        {% blocktrans %}
         Frequently asked questions about proctoring and earning college credit.
+        {% endblocktrans %}
       </a>
-      <a class="footer-link" href="{{link_urls.get('online_proctoring_rules','#')}}">
+      <a class="footer-link" href="{{link_urls.online_proctoring_rules}}">
+        {% blocktrans %}
         Online proctoring rules
+        {% endblocktrans %}
       </a>
-      <a class="footer-link" href="{{link_urls.get('tech_requirements','#')}}">
+      <a class="footer-link" href="{{link_urls.tech_requirements}}">
+        {% blocktrans %}
         Technical Requirements for taking a proctored exam
+        {% endblocktrans %}
       </a>
-    {% endblocktrans %}
   </p>
 </div>

edx_proctoring/templates/proctoring/seq_proctored_exam_submitted.html

@@ -16,7 +16,7 @@
     {% blocktrans %}
       Proctoring session results are usually available 24-48 hours after you submit your exam.
       If you have questions about the status of your session review
-      after that time, contact <a href="{{link_urls.get('contact_us','#')}}">{{platform_name}}</a> Support.
+      after that time, contact <a href="{{link_urls.contact_us}}">{{platform_name}}</a> Support.
     {% endblocktrans %}
   </p>
   <hr>