Fix attribute target.

lms/djangoapps/courseware/features/lti.py

@@ -50,7 +50,7 @@ def lti_is_rendered(_step, rendered_in):
         assert world.is_css_present('.link_lti_new_window')
         assert not world.is_css_present('.error_message')
         check_lti_popup()
-    else:  # incorrent rendered_in parametetr
+    else:  # incorrent rendered_in parameter
         assert False
 
 

lms/templates/lti.html

@@ -18,7 +18,7 @@
         name="ltiLaunchForm-${element_id}"
         class="ltiLaunchForm"
         method="post"
-        target=${"_blank" if open_in_a_new_page else "ltiLaunchFrame-${element_id}"}
+        target=${"_blank" if open_in_a_new_page else "ltiLaunchFrame-{0}".format(element_id)}
         encType="application/x-www-form-urlencoded"
     >