Add link to @seamapi/url-search-params-parser

Author: razor-x

README.md

@@ -11,9 +11,10 @@ Defines the standard for how the Seam SDKs and other Seam API consumers
 should serialize objects to [URLSearchParams] in HTTP GET requests.
 Serves as a reference implementation for Seam SDKs in other languages.
 
-See this test for the [serialization behavior](./test/serialization.test.ts).
+This serializer may be used as a true inverse operation to [@seamapi/url-search-params-parser][@url-search-params-parser].
 
 [URLSearchParams]: https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams
+[@url-search-params-parser]: https://github.com/seamapi/url-search-params-parser
 
 ### Serialization strategy