Update README.md

README.md

@@ -4,9 +4,9 @@ RDFSharp is a modular .NET library made up of 3 layers:
 
 <b><a href="https://github.com/mdesalvo/RDFSharp/releases/download/v3.14.0/RDFSharp.Model-3.14.0.pdf">RDFSharp.Model</a></b>
 <ul>
-    <li>Create and manage <b><a href="https://www.w3.org/TR/rdf11-primer/">RDF models</a></b> (resources, literals, triples, graphs, namespaces, datatypes, ...)</li>
+    <li>Create and manage <b>RDF models</b> (resources, literals, triples, graphs, namespaces, datatypes, ...)</li>
     <li>Exchange them using standard <b>RDF formats</b> (N-Triples, TriX, Turtle, RDF/Xml)</li>
-    <li>Create and validate <b><a href="https://www.w3.org/TR/shacl/">SHACL shapes</a></b> (shape graphs, shapes, targets, constraints, reports, ...)</b></li>
+    <li>Create and validate <b>SHACL shapes</b> (shape graphs, shapes, targets, constraints, reports, ...)</b></li>
 </ul>
 
 <b><a href="https://github.com/mdesalvo/RDFSharp/releases/download/v3.14.0/RDFSharp.Store-3.14.0.pdf">RDFSharp.Store</a></b>
@@ -18,8 +18,8 @@ RDFSharp is a modular .NET library made up of 3 layers:
 
 <b><a href="https://github.com/mdesalvo/RDFSharp/releases/download/v3.14.0/RDFSharp.Query-3.14.0.pdf">RDFSharp.Query</a></b>
 <ul>
-    <li>Create and execute <b><a href="https://www.w3.org/TR/sparql11-query/">SPARQL queries</a></b> on graphs, stores, federations and SPARQL endpoints</li>
-    <li>Create and execute <b><a href="https://www.w3.org/TR/sparql11-update/">SPARQL operations</a></b> on graphs, stores and SPARQL UPDATE endpoints</li>
+    <li>Create and execute <b>SPARQL queries</b> on graphs, stores, federations and SPARQL endpoints</li>
+    <li>Create and execute <b>SPARQL operations</b> on graphs, stores and SPARQL UPDATE endpoints</li>
 </ul>
 <hr/>
-An additional <a href="https://github.com/mdesalvo/OWLSharp">framework</a> is available for working with <b>OWL2 ontologies</b>
+An additional <a href="https://github.com/mdesalvo/OWLSharp">library</a> is available for working with <b>OWL2 ontologies</b>