TinyMCE RTE remove trailing slash from <br /> tag

At first. Is there a way to remove trailing slash from <br /> tag that TinyMCE RTE creates?
There is “Info” label with "Trailing slash on void elements and interacts badly with unquoted attribute values"in W3C html validator.
I know that is not a serius issue, but better if you want good HTML code.
Secondly is there way to set or check TinyMCE RTE to make html 5 compatible code.

Take a look at this topic:

Thanks! That seems to work!

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