Function isValidRDSFamily

isValidRDSFamily(family: string): Promise<boolean>
Check if an RDS instance family exists in the dataset.
Parameters
- family: string
  The family name to check
Returns Promise<boolean>
Promise resolving to true if the family exists, false otherwise
Example
```
import { isValidRDSFamily } from 'aws-instance-info/async'

console.log(await isValidRDSFamily('M5')) // true
console.log(await isValidRDSFamily('R6g')) // true
console.log(await isValidRDSFamily('Invalid')) // false
```
- Defined in rds.async.ts:318