Worked on maintaining the zephyrproject-rtos/zephyr-testing repository, focusing on improving the accuracy and clarity of MQTT configuration documentation. Addressed a documentation bug by clarifying the behavior of MQTT hostname verification, specifically noting that setting the peer hostname to NULL does not skip verification, and corrected a minor typo in code comments. This work enhanced the developer experience by reducing potential misinterpretations and misconfigurations for users and contributors. Utilized C programming skills within the context of embedded systems and networking, ensuring the codebase remained consistent and well-documented, which supported more efficient quality assurance and helped minimize future support requests.