Name of the reference section

[wilzbach]

While reviewing @JackStouffer Unicode PR I saw that there are different spellings for "in-depth" and "In depth". I don't know whether there is any difference between them, but if someone knows or has a better name for the reference section, feel free to shoot!

[wilzbach]

Btw the Rust tour uses the name "See also", e. g.

http://rustbyexample.com/custom_types/structs.html

Their style to use just one words and separate with commas isn't that bad either..