Consistent "get" or "fetch" in endpoint descriptions

[david-crespo]

We use "fetch" in some spots, "get" in others. I thought we used fetch more, but that may not be true. Fetch feels more precise and technical, but it also is two characters longer for little benefit. I'll have to see how they each feel in context in the docs site to decide.

Thanks for the suggestions, I'll reword these. I notice that "get" and "fetch" are used pretty interchangeably in other APIs...we should probably give that a pass to make it more consistent (separately from this PR of course):

Originally posted by @hawkw in #7277 (comment)

[hawkw]

I also notice that sometimes we use "a" in these, and other times we don't (at least "Get a physical disk" above). Maybe worth giving that a pass as well.