Fix Example Code

[kathyoleary]

In order to learn how to create code correctly, As an LMHT user, I want the example codes shown for each element to be accurate.

Acceptance Criteria:

• header example doesn't show at end- shows
  - Correct it to end header properly with
  .
• style example doesn't close style or h1 correctly and title example uses the same example and is also incorrect - Close both style and h1 with and accordingly on each element's page.

Given any LMHT user, I want to be able to learn how to code accurately By looking at the example code given for each element

[kathyoleary]

https://github.com/adorableio/LMHT/pull/46 Put out there for thumbs.