March 2026 monthly summary for prometheus/prometheus: Delivered a targeted documentation improvement for PromQL, correcting terminology for stdvar_over_time and histogram_stdvar from 'standard variance' to 'variance' to reflect actual behavior. This was implemented in the prometheus/prometheus repository with commit 69f6ade9762614bd222e8fb3533fe215babca25e (docs: update promql autocomplete), signed off by Pavel Rysnik. The change enhances accuracy, reduces user confusion, and supports better autodoc and autocomplete experiences. While no code changes were required for this item, the documentation refinement lowers future support loads and accelerates onboarding for new contributors. Overall, this month emphasized documentation quality and developer experience, with emphasis on business value of correct PromQL semantics and improved discovery of PromQL features.