Fixed incorrect videoalpha template name

lms/djangoapps/courseware/features/video.py

@@ -50,7 +50,7 @@ def add_video_to_course(course):
 
 
 def add_videoalpha_to_course(course):
-    template_name = 'i4x://edx/templates/videoalpha/default'
+    template_name = 'i4x://edx/templates/videoalpha/Video_Alpha_1'
     world.ItemFactory.create(parent_location=section_location(course),
                              template=template_name,
                              display_name='Video Alpha 1')

lms/djangoapps/courseware/features/videoalpha.feature

-Feature: Video Alpha component
-  As a student, I want to view course videos in LMS.
-
-  Scenario: Autoplay is enabled in LMS
-    Given the course has a Video component
-    Then when I view the video it has autoplay enabled