examples/README.md: Add ref to spdx/spdx-examples repo for more examples

examples/README.md

@@ -1,7 +1,18 @@
-## Examples
+# Examples
 
-All of the examples in this directory are for the same SPDX document.  Most of the supported document elements are present.
+All the examples in this directory are for the same SPDX document.
+Most of the supported document elements are present here.
 
 A JSON schema can be found in the schema directory of this repository.
 
-An RDF OWL Ontology and a JSON-LD context can be found in the ontology directory of this repository.
+An RDF OWL Ontology and a JSON-LD context can be found in the ontology
+directory of this repository.
+
+For more SPDX examples, including examples using different SPDX versions,
+please see:
+
+- Examples by scenarios and use cases for a particular domain (e.g., security,
+  license compliance): <https://github.com/spdx/spdx-examples>
+- Code snippets demonstrating examples of how to use a particular field can be
+  found on the page for that field in the
+  [SPDX Specification](https://spdx.github.io/spdx-spec/).