website fix

Author: yaacovCR

website/pages/upgrade-guides/v16-v17.mdx

@@ -145,7 +145,7 @@ Use the `validateInputValue` helper to retrieve the actual errors.
 - Removed deprecated `getOperationType` function, use `getRootType` on the `GraphQLSchema` instance instead
 - Removed deprecated `getVisitFn` function, use `getEnterLeaveForKind` instead
 - Removed deprecated `printError` and `formatError` utilities, you can use `toString` or `toJSON` on the error as a replacement
-- Removed deprecated `assertValidName` and `isValidNameError` utilities, use `assertName` instead
+- Removed deprecated `assertValidName` and `isValidNameError` utilities, use `assertHasValidName` instead
 - Removed deprecated `assertValidExecutionArguments` function, use `assertValidSchema` instead
 - Removed deprecated `getFieldDefFn` from `TypeInfo`
 - Removed deprecated `TypeInfo` from `validate` https://github.com/graphql/graphql-js/pull/4187