Void elements reviewer

[paganotoni]

As we're focusing on HTML syntax for HTML we could add a reviewer that checks for non-void self-closing tags. In the HTML syntax for HTML there are a set of these elements that should be self closed:

• area
• base
• br
• col
• command
• embed
• hr
• img
• input
• keygen
• link
• meta
• param
• source
• track
• wbr

We should check that these elements never have content. And also check that only these elements are self-closed. (These may be two linters).

[paganotoni]

cc @larrymjordan @tatang26

[paganotoni]

There is another reviewer we could add here which is related with adding the self-close slash on void tags, I think this is more related with style preferences.