#3336 docs: Explain parameter replacement in parent-child streams Pull request opened by edgarrmondragon ## Summary by Sourcery Add a detailed documentation section describing how path parameter replacement works in parent-child streams, covering context propagation, URL parameter extraction, and schema considerations Documentation: • Document how SDK extracts context variables from parent streams and substitutes them into URL paths • Explain structure of the context dictionary and example of generated child URLs • Note requirement to include context keys in child schemas if they should be retained in records meltano/sdk