The code example for trim ltrim and rtrim from the manual do not work

This example from the manual do not work 
https://jqplay.org/jq?q=trim%2C%20ltrim%2C%20rtrim&j=%22%20abc%20%22


![image](https://github.com/jqlang/jq/assets/859655/74ea73e2-3c7c-41bf-a09f-e22bb0c5a350)


