[docs]: Operator `throttleTime` is missing an example for the throttleConfig param

Documentation Related To Component:

The throttleTime operator: throttleTime.ts

Please check those that apply

• typo
• documentation doesn't exist
• documentation needs clarification
• error(s) in example
• needs example

We may want to include a description for throttleConfig param. Also, the see also section is incomplete.

Description

The detailed description can be improved. Here we should include that:

• there is an optional config param

See Also

We miss some operators in the see also section.

A suggested list for related operators could look like this:

 * @see {@link delay}
 * @see {@link delayWhen}
 * @see {@link audit}
 * @see {@link auditTime}
 * @see {@link debounce}
 * @see {@link debounceTime}
 * @see {@link sample}
 * @see {@link sampleTime}
 * @see {@link throttle}