improve documentation for RESOLVE_INLINE_ENUMS (OpenAPITools#20812)

related to OpenAPITools#20790

Author: david0

docs/customization.md

@@ -504,7 +504,7 @@ Another useful option is `inlineSchemaOptions`, which allows you to customize ho
 - `MAP_ITEM_SUFFIX` set the map item suffix
 - `SKIP_SCHEMA_REUSE=true` is a special value to skip reusing inline schemas during refactoring
 - `REFACTOR_ALLOF_INLINE_SCHEMAS=true` will restore the 6.x (or below) behaviour to refactor allOf inline schemas into $ref. (v7.0.0 will skip the refactoring of these allOf inline schemas by default)
-- `RESOLVE_INLINE_ENUMS=true` will refactor inline enum definitions into $ref
+- `RESOLVE_INLINE_ENUMS=true` will refactor inline enum definitions into $ref. This must be activated to allow the renaming of inline enum definitions using `inlineSchemaMappings`.
 
 ## OpenAPI Normalizer