Function getElastiCacheFamilyCategory

getElastiCacheFamilyCategory(family: ElastiCacheFamily): ElastiCacheCategory
Get the category for an Elasticache node family.
Parameters
- family: ElastiCacheFamily
  The node family (e.g., "M5")
Returns ElastiCacheCategory
The category (e.g., "general_purpose")
Example
```
import { getElastiCacheFamilyCategory } from 'aws-instance-info'

const category = getElastiCacheFamilyCategory('M5')
console.log(category) // 'general_purpose'

const category2 = getElastiCacheFamilyCategory('R6g')
console.log(category2) // 'memory_optimized'
```
- Defined in elasticache.ts:155