Fix HTML encoding for triple example

Author: franconi

spec/index.html

@@ -1519,7 +1519,7 @@ <h3>RDFS entailment</h3>
 
 		For example, the asserted triple 
 
-		<br></p>&lt;&lt;( :a :b :c )&gt;&gt; :p :o.</br>
+		<br>&lt;&lt;( :a :b :c )&gt;&gt; :p :o.</br>
 
 		is satisfied in the interpretation where IT maps &lt;x,y,z&gt; to x, 
 		and x is an instance of the denotation of rdfs:Proposition.