Fix function for escape code in example of pattern.

[nacho87]

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...) Fix when you use tag h2 for example in element of the api
• What is the current behavior? (You can also link to an open issue here) In the api example the text is render like normal page http://snaps.getmoxied.net/0Q180D0p403k
• What is the new behavior (if this is a feature change)? Remove the style inline and show only the tags and not render de page , and show only the code
• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)
• Other information: