fix(docs): fix optimization.chunkIds type

Author: Raginipatel17

src/content/configuration/optimization.mdx

@@ -41,7 +41,8 @@ export default {
 
 ## optimization.chunkIds
 
-`boolean` | `natural` | `named` | `size` | `total-size` | `deterministic`
+`boolean: false`
+`string: 'natural' | 'named' | 'size' | 'total-size' | 'deterministic'`
 
 - `false`: disable webpack's built-in chunk id algorithm
 - one of the following values: