updated CHANGELOG

Author: martinohanlon

CHANGELOG.md

@@ -7,6 +7,7 @@
 - Document node is now always created when running SimpleKGPipeline, even if `from_pdf=False`.
 - Document metadata is exposed in SimpleKGPipeline run method.
 - Added automatic rate limiting with retry logic and exponential backoff for all Embedding providers using tenacity. The `RateLimitHandler` interface allows for custom rate limiting strategies, including the ability to disable rate limiting entirely.
+- JSON response returned to `SchemaFromTextExtractor` is cleansed of any markdown code blocks before being loaded.
 
 ### Fixed