Update shacl12-overview/index.html

Co-authored-by: Jesse Wright <[email protected]>

Author: nicholascar

shacl12-overview/index.html

@@ -452,7 +452,7 @@ <h2>SHACL-SHACL</h2>
 				<dd>Profiling specification elements only</dd>
 			</dl>
 			<p class="note">
-				There is no SHACL-SHACL graph for SHACL Compact Syntax since that specification does not define Shapes in RDF.
+				There is no SHACL-SHACL graph for SHACL Compact Syntax since the specification defines an RDF syntax specialised for describing SHACL concepts - and does not introduce any new concepts itself.
 			</p>
 			<p>
 				Additionally, the union of the above shapes graphs is also provided: