Reduce tos/honorcode font size

VAN-170

lms/static/sass/views/_login-register.scss

@@ -332,6 +332,10 @@ ul.fa-ul{
       font-style: normal;
       font-weight: 500;
 
+      &.honor_tos_combined {
+        font-size: small;
+      }
+
       &.focus-in {
         position: relative;
         padding-top: 0;

lms/templates/student_account/form_field.underscore

@@ -75,7 +75,7 @@
             </div>
         <% } %>
     <% } else if (type === 'plaintext' ) { %>
-            <span class="plaintext-field"><%= HtmlUtils.HTML(label) %></span>
+            <span class="plaintext-field honor_tos_combined"><%= HtmlUtils.HTML(label) %></span>
             <input id="<%- form %>-<%- name %>"
                type="hidden"
                name="<%- name %>"