message: docs(CONTRIBUTING): Fix markdown
  Fix markdown in contributing so it displays correctly on github, and
  also because of the irony.
diff: @@ -20,13 +20,13 @@ we use the git commit messages to **generate the change log**.
  Each commit message consists of a **header**, a **body** and a **footer**. The header has a special
  format that includes a **type**, a **scope** and a **subject**:
  -``
  +```
  <type>(<scope>): <subject>
  <BLANK LINE>
  <body>
  <BLANK LINE>
  <footer>
  -``
  +```
  Any line of the commit message cannot be longer 100 characters! This allows the message to be easier
  to read on github as well as in various git tools.
  @@ -65,10 +65,12 @@ The subject contains succinct description of the change:
  * no dot (.) at the end
  ### Body
  +
  Just as in the **subject**, use the imperative, present tense: "change" not "changed" nor "changes"
  The body should include the motivation for the change and contrast this with previous behavior.
  ### Footer
  +
  The footer should contain any information about **Breaking Changes** and is also the place to
  reference GitHub issues that this commit **Closes**.
  