Add missing urls and examples to TcpStream

[GuillaumeGomez]

r? @frewsxcv

[frewsxcv]

	error[E0061]: this function takes 0 parameters but 1 parameter was supplied
 --> <anon>:8:19
  |
8 | stream.take_error(100).expect("No error was expected...");
  |                   ^^^ expected 0 parameters
error: aborting due to previous error(s)

[frewsxcv]

Only change it if you want to, but instead of doing unwrap_or, you could also:

assert_eq!(stream.nodelay(), Ok(true));

[GuillaumeGomez]

I prefer this way if you don't mind.

[frewsxcv]

@GuillaumeGomez Up to you if you want to address that comment, otherwise r=me

[GuillaumeGomez]

@bors: r=frewsxcv

[bors]

📌 Commit 56529cd has been approved by frewsxcv

[bors]

⌛ Testing commit 56529cd with merge 9a86579...

[bors]

☀️ Test successful - auto-linux-32-nopt-t, auto-linux-32-opt, auto-linux-64-cargotest, auto-linux-64-cross-freebsd, auto-linux-64-debug-opt, auto-linux-64-nopt-t, auto-linux-64-opt, auto-linux-64-opt-rustbuild, auto-linux-64-x-android-t, auto-linux-cross-opt, auto-linux-musl-64-opt, auto-mac-32-opt, auto-mac-64-opt, auto-mac-64-opt-rustbuild, auto-mac-cross-ios-opt, auto-win-gnu-32-opt, auto-win-gnu-32-opt-rustbuild, auto-win-gnu-64-opt, auto-win-msvc-32-opt, auto-win-msvc-64-cargotest, auto-win-msvc-64-opt, auto-win-msvc-64-opt-rustbuild
Approved by: frewsxcv
Pushing 9a86579 to master...