Correct unicode symbol in signup link (#632)

Author: whytheplatypus

apps/home/templates/index.html

@@ -32,7 +32,7 @@ <h1 class="ds-display">Blue Button 2.0</h1>
 
                    <a class="ds-c-button button--white" href="{% url 'accounts_create_account' %}"> aria-label="Sign up for the {{ settings.APPLICATION_TITLE }}" target="_self">Sign up for the {{ settings.APPLICATION_TITLE }} &rarr;</a>
                 {% else %}
-                   <a class="ds-c-button button--white" href="https://sandbox.bluebutton.cms.gov/v1/accounts/create" aria-label="Sign up for the Blue Button 2.0 Sandbox" target="_self">Sign up for the Blue Button 2.0 Sandbox &rarr</a>
+                   <a class="ds-c-button button--white" href="https://sandbox.bluebutton.cms.gov/v1/accounts/create" aria-label="Sign up for the Blue Button 2.0 Sandbox" target="_self">Sign up for the Blue Button 2.0 Sandbox &rarr;</a>
                 {% endif %}
               </div>