<p> cannot contain block elements
fix closing span/anchor
Re-do the Jasmine docs to create valid markup.

Not sure if the bug is in marked or highlight.js but don't care. This
updated description is better anyway.
typo with svg
change section slug to avoid conflict with sub-topic slug
frameborder should be set in CSS
Merge branch 'valid-html-cleanup'

* valid-html-cleanup:
  frameborder should be set in CSS
  change section slug to avoid conflict with sub-topic slug
  typo with svg
  Re-do the Jasmine docs to create valid markup.
  fix closing span/anchor
  <p> cannot contain block elements