Document jdk.hints.preferences file format

[kalaracey]

The extension description includes the following section:

Hints Preferences

Easily update default hint preferences by adjusting a simple configuration option to tailor hint preferences to specific needs.

Go to VSCode View | Command Palette | Preferences:Open User Settings | Extensions | Java and set Jdk › Hints: Preferences: option to the xml hint preferences file.

Note that there is no documentation of what this file or its format is. I think what is missing is a link to a Wiki page similar to the link in the Formatting Preferences section to the Java Formatting Preferences Wiki page.

See also: #239

[kalaracey]

I think this is the right place:

And then export.

[Achal1607]

Hey @kalaracey, thanks for pointing this out. We would add a wiki for hints preferences setting as well.