Sylvia/docs/doc 759

@jmclaus Hey Jean-Michel - I can't get this to work. When I create the component in my toy course, there's just a big blank box where the molecule should be. Can you look through this and let me know if some of the instructions are wrong? Thanks!
Agreed - I added it as a note so that it would be surrounded by a blue box instead of just blending in with other text. I'll move it above the heading, though, and change the wording a little.