protocol-message-formats <- display format

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/11/protocol-message-formats.html
Description:

Hi,

It would improve the readability if we add further tabulation to the
description of each message.
Also, make the message title bold to visually distinguish it from the
description.

I would gladly modify the css to make this happen.