Update docs to reflect that collection rel type can be for anything (#1393)

* docs: collection rel type can be for anything

* chore: update CHANGELOG

Author: gadomski

CHANGELOG.md

@@ -13,6 +13,7 @@
 - Updated classification extension to v2.0.0 ([#1359](https://github.com/stac-utils/pystac/pull/1359))
 - Update docstring of `name` argument to `Classification.apply` and `Classification.create` to agree with extension specification ([#1356](https://github.com/stac-utils/pystac/pull/1356))
 - Add example of custom `StacIO` for Azure Blob Storage to docs ([#1372](https://github.com/stac-utils/pystac/pull/1372))
+- Noted that collection links can be used in non-item objects in STAC v1.1.0 ([#1393](https://github.com/stac-utils/pystac/pull/1393))
 
 ### Fixed
 

pystac/link.py

@@ -455,7 +455,7 @@ def parent(cls: type[L], c: Catalog) -> L:
 
     @classmethod
     def collection(cls: type[L], c: Collection) -> L:
-        """Creates a link to an item's Collection."""
+        """Creates a link to a Collection."""
         return cls(pystac.RelType.COLLECTION, c, media_type=pystac.MediaType.JSON)
 
     @classmethod