doc: use consistent typography for `Note:`
Checklist
-
the commit message follows commit guidelines
Affected core subsystem(s)
doc
Description of change
Typography choices for Note:
text is all over the map in stream.md.
This change introduces the following consistently for Note:
text:
- Only
Note:
is in bold. - Additional emphasis is done with italics, not CAPITALIZATION.
- The first word after
Note:
is capitalized. - When classes are mentioned, they are enclosed in backticks.
- Only one space is used between sentences.
/cc @nodejs/documentation