Update spec/index.html

Co-authored-by: Ted Thibodeau Jr <[email protected]>

Author: afs

spec/index.html

@@ -7957,7 +7957,7 @@ <h5>TRIPLE</h5>
             <ul>
               <li>each of the three elements of the triple term expression can only be
                 a <a href="#defn_QueryVariable">variable</a>
-                or a directly written [=RDF terms=], not arbitrary expressions.
+                or a directly written [=RDF term=], not an arbitrary expression.
               </li>
               <li>
                 the syntax of the subject and predicate positions is limited to an