Worked on the defold/defold repository to enhance the build documentation, focusing on improving clarity and accuracy for developers. Updated the README_BUILD.md file by appending the .sh extension to the submodule script command, ensuring that the documented instructions matched the actual build tooling and script invocation process. This change, implemented using Markdown and documentation best practices, aimed to reduce confusion during build setup and streamline onboarding for new contributors. The update provided a clear and maintainable commit history, supporting future documentation efforts. No bugs were addressed during this period, with all work centered on documentation quality and reproducibility of builds.