message: Clarify method to get nextLink URL for x-ms-pageable
diff: @@ -926,7 +926,7 @@ With this extension, you can set a default value for a property or parameter tha
  The REST API guidelines define a common pattern for paging through lists of data. The operation response is modeled in OpenAPI as a list of items (a "page") and a link to the next page, effectively resembling a singly linked list. Tag the operation as `x-ms-pageable` and the generated code will include methods for navigating between pages.
  -**Note:** The request to get the nextPage will always be a `GET` request
  +**Note:** The request to the nextLink URL will be a `GET` request unless `operationName` is specified. If `operationName` is specified, the request will use the HTTP method for that operation.
  **Schema**:
  @@ -934,7 +934,7 @@ The REST API guidelines define a common pattern for paging through lists of data
  | ------------- | :------: | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
  | itemName | `string` | Optional (default: `value`). Specifies the name of the property that provides the collection of pageable items. |
  | nextLinkName | `string` | Required. Specifies the name of the property that provides the next link (common: `nextLink`). If the model does not have a next link property then specify `null`. This is useful for services that return an object that has an array referenced by `itemName`. The object is then flattened in a way that the array is _directly_ returned, no paging is used. This provides a better client side API to the end user. |
  -| operationName | `string` | Optional (default: `<operationName>Next`). Specifies the name of the operation for retrieving the next page. |
  +| operationName | `string` | Optional (default: `<operationName>Next`). Specifies the name (operationId) of the operation for retrieving the next page. |
  **Parent element**: [Operation Object](https://github.com/swagger-api/swagger-spec/blob/master/versions/2.0.md#operationObject)
  