fixes w3c#140 "Proposed editorial changes" only.

spec/index.html

@@ -1875,10 +1875,10 @@ <h3>SPARQL</h3>
         [[[SPARQL11-QUERY]]].</p>
     </section>
     <section id="rel-n3-trig">
-      <h3>TriG</h3>
+      <h3>TriG vs N3 Named Graphs</h3>
       <p>[[[TRIG]]] is itself a superset of the Turtle syntax and includes a compact way to write RDF datasets, i.e.,
         sets of named graphs. In particular, TriG allows the specification of so-called graph statements, which are a
-        pair of an <a>IRI</a> or blank node label and a group of triple statements surrounded by "<code>{</code>" and
+        pair of a graph name (<a>IRI</a> or blank node) and a group of triple statements surrounded by "<code>{</code>" and
         "<code>}</code>".</p>
       <p>For instance:</p>
       <pre class="example nohighlight linkeditor" data-transform="updateExample">
@@ -1906,9 +1906,10 @@ <h3>TriG</h3>
 </pre>
       <p>N3 is not directly compatible with TriG as it does not support this graph statement notation. Nevertheless,
         since N3 supports <a>quoted graphs</a> as part of regular <a>N3 statements</a>,
-        authors can utilize the <a href="https://github.com/IDLabRese arch/N3NamedGraphSemantics">N3 Named Graphs
+        authors can utilize the <a href="https://github.com/IDLabResearch/N3NamedGraphSemantics">N3 Named Graphs
           extension</a>;
         this extension allows associating names or identifiers with <a>quoted graphs</a>.
+        (Note: the `sem:` prefix indeed refers to `https://example.org/ns/semantics#` as shown below).
         For instance:
         <pre class="example nohighlight linkeditor" data-transform="updateExample"><!--