fix syntax in template

lms/templates/dashboard.html

@@ -165,7 +165,7 @@
             elif cert_status['status'] == CertificateStatuses.notpassing:
                 status_css_class = 'course-status-certnotavailable'
                 survey_button = True
-              else cert_status['status']:
+            else:
                 # This is primarily the 'unavailable' state, but also 'error', 'deleted', etc.
                 status_css_class = 'course-status-processing'