single-file-stac: update changelog

CHANGELOG.md

@@ -27,7 +27,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - **stac_extensions**: Introduced this field for Items, Catalogs and Collections.
 - Property `summaries` have been added to catalogs and collections.
 - API Transaction extension supports optimistic locking through use of the ETag header.
-- [Single File Catalog extension](extensions/single-file-catalog/README.md) added as a format to have a set of Collections and Items in a single file.
+- [Single File Catalog extension](extensions/single-file-stac/README.md) added as a format to have a set of Collections and Items in a single file.
 - [Label extension](extensions/label/README.md) added with additional fields for describing labeled data, such as used for training data or from the output of a classification
 - Timestamp fields added to `Item`: `created` and `updated` to refer to the datetime the metadata file was created or updated.
 - Added Search Metadata API extension which adds fields to a response from a STAC API such as the number of items found and how many were returned.