During the month, contributed a targeted documentation improvement to the etendosoftware/docs repository, focusing on the Modelo 349 section related to Edición de Número de Justificante. The work involved enhancing clarity by inserting a comma, which addressed a potential source of user confusion in number-justification workflows. This update, implemented using Markdown and version control tools, aimed to provide more accurate guidance for users and streamline onboarding processes. No production bugs were addressed during this period, as the primary focus remained on user-facing documentation quality. The contribution demonstrated technical writing skills, attention to detail, and effective cross-repository collaboration within the documentation workflow.