message: docs(Form): add basic API description
diff: @@ -404,15 +404,27 @@ export default {
  ### Props
  | Attribute | Description | Type | Default |
  -| --------- | ----------- | ---- | ------- |
  -
  +|------|------|------|------|
  +| validate-first | Whether to stop the validation when a rule fails | *boolean* | `false` |
  ### Events
  | Event | Description | Arguments |
  +|------|------|------|
  +| submit | Triggered after submitting the form and validation passed | *values: object* |
  +| failed | Triggered after submitting the form and validation failed | *errorInfo: { values: object, errors: object[] }* |
  +
  +### Methods
  +
  +Use [ref](https://vuejs.org/v2/api/#ref) to get Form instance and call instance methods
  +
  +| Name | Description | Attribute | Return value |
  +|------|------|------|------|
  +| validate | Trigger validation | - | *Promise\<void\>* |
  +| resetValidation | Reset all validation | - | - |
  ### Slots
  | Name | Description |
  | ---- | ----------- |
  -
  +| default | Form content |
  