update introductory text in

Author: pchampin

spec/common/rdf-related.html

@@ -1,5 +1,5 @@
 <h4>Set of Documents</h4>
-<p>This document is one of ten RDF 1.2 documents produced by the <a href="https://www.w3.org/groups/wg/rdf-star">RDF-star Working Group</a>.</p>
+<p>This document is one of eleven RDF 1.2 documents produced by the <a href="https://www.w3.org/groups/wg/rdf-star">RDF &amp; SPARQL Working Group</a>.</p>
 <details>
 <summary>List of documents</summary>
 

spec/common/related.html

@@ -1,5 +1,5 @@
 <h4>Set of Documents</h4>
-<p>This document is one of ten RDF 1.2 and twelve SPARQL 1.2 documents produced by the <a href="https://www.w3.org/groups/wg/rdf-star">RDF-star Working Group</a>.</p>
+<p>This document is one of eleven RDF 1.2 and twelve SPARQL 1.2 documents produced by the <a href="https://www.w3.org/groups/wg/rdf-star">RDF &amp; SPARQL Working Group</a>.</p>
 <details>
 <summary>List of documents</summary>
 

spec/common/sparql-related.html

@@ -1,5 +1,5 @@
 <h4>Set of Documents</h4>
-<p>This document is one of twelve SPARQL 1.2 documents produced by the <a href="https://www.w3.org/groups/wg/rdf-star">RDF-star Working Group</a>.</p>
+<p>This document is one of twelve SPARQL 1.2 documents produced by the <a href="https://www.w3.org/groups/wg/rdf-star">RDF &amp; SPARQL Working Group</a>.</p>
 <details>
 <summary>List of documents</summary>