[selectors] Normative text that got merged into note should stay normative, so let's just make the whole paragraph normative.

Author: fantasai

selectors/Overview.bs

@@ -1872,7 +1872,7 @@ The Link History Pseudo-classes: '':link'' and '':visited''</h3>
 	</ul>
 
 	After some amount of time, user agents may choose to return a
-	visited link to the (unvisited) ':link' state.
+	visited link to the (unvisited) '':link'' state.
 
 	The two states are mutually exclusive.
 
@@ -1883,13 +1883,11 @@ The Link History Pseudo-classes: '':link'' and '':visited''</h3>
 		<pre>.footnote:visited </pre>
 	</div>
 
-	Note: It is possible for style sheet
-	authors to abuse the :link and :visited pseudo-classes to determine
-	which sites a user has visited without the user's consent.
-	UAs may therefore treat all links as unvisited links, or implement
-	other measures to preserve the user's privacy while rendering visited
-	and unvisited links differently.
-
+	Since it is possible for style sheet authors to abuse the :link and :visited pseudo-classes
+	to determine which sites a user has visited without the user's consent,
+	UAs may treat all links as unvisited links
+	or implement other measures to preserve the user's privacy
+	while rendering visited and unvisited links differently.
 
 <h3 id="the-target-pseudo">
 The Target Pseudo-class: '':target''</h3>