Clarify use of HTML markup per request by @TallTed.

Author: msporny

index.html

@@ -4903,12 +4903,13 @@ <h3>Complex Language Markup</h3>
       </p>
 
       <p>
-Implementers are strongly discouraged from encoding information as HTML
-because doing so 1) requires some version of an HTML processor, which
-increases the burden of processing language and/or base direction information,
-and 2) increases the security attack surface when utilizing this data model
-as blindly processing HTML could result in executing a <code>script</code>
-tag that an attacker injected at some point during the data production process.
+Despite that possibility, implementers are strongly discouraged from encoding
+information as HTML because doing so 1) requires some version of an HTML
+processor, which increases the burden of processing language and/or base
+direction information, and 2) increases the security attack surface when
+utilizing this data model as blindly processing HTML could result in executing
+a <code>script</code> tag that an attacker injected at some point during the
+data production process.
       </p>
 
       <p>