Fix inline literals in the docs

description

historically it was the policy to use single backticks for inline-literals in the docs, which has the effect of making them italics.

the correct rst spec for these is to use double-backticks.

i have been cleaning these up in docs i have worked on or in prs i have reviewed but there are still a lot of places that have italicized inline-literals

we can probably break this up into fixing different parts of the site - ie api, docs, etc

ideally, once this is fixed we would want it to stay fixed - see #19633 for further discussion of this