correct example index name

Author: sundersc

packages/appsync-modelgen-plugin/src/utils/process-index.ts

@@ -34,7 +34,7 @@ export const processIndex = (model: CodeGenModel) => {
 /*
  * Accepts a model and field name, and potentially empty list of sortKeyFields to generate a unique index name.
  * e.g. modelName = Employee, fieldName = manager, sortKeyFields = [level]
- * will generate a name like employeeByManagerAndLevel.
+ * will generate a name like employeesByManagerAndLevel.
  * (This naming logic is used to generate a default index name for @index directives that don't have a name argument).
  * Refer https://github.com/aws-amplify/amplify-category-api/blob/main/packages/amplify-graphql-index-transformer/src/utils.ts
  */