update

Author: ymc9

versioned_docs/version-3.x/orm/validation.md

@@ -18,9 +18,9 @@ Input validation is only applied to the ORM APIs like `create`, `update`, etc. I
 
 When defining a model field in ZModel, you specify its type, which provides a basic level of runtime validation - when an incompatible value is passed to the field during creation or update, the ORM engine will reject the operation.
 
-However, oftentimes you want to express more fine-grained validation rules, such as field length, string format, or numeric range, etc. ZModel provides a set of built-in field-level validation attributes, like `@length`, `@email`, etc., for this purpose. See [Input Validation](../reference/zmodel/input-validation.md) for more details.
+However, oftentimes you want to express more fine-grained validation rules, such as field length, string format, or numeric range, etc. ZModel provides a set of built-in field-level validation attributes, like `@length`, `@email`, etc., for this purpose. See [reference guide](../reference/zmodel/input-validation.md) for more details.
 
-To support more complex rules, a powerful `@@validate` model-level attribute is provided to allow expression rules using multiple fields and logical operators. Inside the `@@validate` attribute, functions like `length()`, `isEmail()`, etc. are available for building up expressions. See [Input Validation](../reference/zmodel/input-validation.md) for the complete list of available functions.
+To support more complex rules, a powerful `@@validate` model-level attribute is provided to allow expression rules using multiple fields and logical operators. Inside the `@@validate` attribute, functions like `length()`, `isEmail()`, etc. are available for building up expressions. See [reference guide](../reference/zmodel/input-validation.md) for the complete list of available functions.
 
 Arguments of mutation operations are validated before sending them to the database. When a validation rule is violated, an `InputValidationError` exception is thrown, containing details about the violations.