Code blocks are poorly formatted in OpenMetrics.txt

[zopsicle]

For instance:

https://github.com/OpenObservability/OpenMetrics/blob/1386544931307dff279688f332890c31b6c5de36/specification/OpenMetrics.txt#L802-L820

Other code blocks are similarly messed up (search for ~~~~).

It seems the Markdown to RFC converter does not support tilde-delimited code blocks.

[erharjotsingh]

hello @chloekek
You can assign it to me. Thanks!

/assign erharjotsingh