Remove bad i18n advice per @r12a and @aphillips.

Author: msporny

index.html

@@ -4913,13 +4913,11 @@ <h3>Complex Language Markup</h3>
       </p>
 
       <p>
-Implementers considering the use of HTML to encode complex language and/or
-base direction information might consider deconstructing the data into a
-format that does not require complex markup, such as an array of elements
-that can use a simpler form of language and/or base direction expression.
-If such an approach is not possible, implementers are advised to analyze
-how an attacker would use the data to mount injection attacks against a
-consumer of the data and deploy mitigations for the identified attacks.
+If implementers feel that they have to use HTML, or other markup languages
+that are capable of containing executable scripts, to achieve a particular
+use case, they are advised to analyze how an attacker would use the markup to
+mount injection attacks against a consumer of the markup and deploy mitigations
+for the identified attacks.
       </p>
     </section>