Clean up empty headings and other elements

[Mr0grog]

In this document, some headings (“Appendix 2” and “Change Control”) show up as a blank heading followed by the actual heading: https://docs.google.com/document/d/1Voa0_i1q8ZCtQkNPPJiNFqy7vhmTzGPthOFRfr4Ledw/edit

For example:

##

## APPENDIX 2: MEASURING OUR PROGRESS

I think there’s probably some whitespace or something in that first <h2>, but I haven’t tried to make an isolated test case yet. It would be nice to strip it out automatically.

[trustedtomato]

I could take on this one, would be useful for me as well 🙂

[Mr0grog]

Great, thank you!