doc: improvements to console.markdown copy

[estliberitas]

Fix missing links. Fix styling of printf() - once #5073 lands, link to man page will be auto-generated. Fix several typos.

[mscdex]

Maybe this should instead be:

... to write to `process.stdout` and `process.stderr`.

[estliberitas]

Yep, I thought so too, but was waiting for this comment 😄

[estliberitas]

Done

[silverwind]

Hmm, multiple places in this file refer to the standard output streams as just stdout, stderr. I think it's better to keep this paragraph unchanged for consistency.

[estliberitas]

@mscdex your thoughts? I agree with both of you, to say, so not sure. From one point, it's OK to use stdout or "process stdout" because, it's how it is. Other point is let people understand that global console uses process.stdout and process.stderr Writable streams. Both points are good to me.

[mscdex]

I guess I don't really mind either way, as long as it's all consistent.

[estliberitas]

@mscdex@silverwind Fixed.

[silverwind]

LGTM

[jasnell]

LGTM

[silverwind]

Landed in fb502ef.