Tidy up and export "Key System"

Author: chrisn

encrypted-media-respec.html

@@ -189,7 +189,7 @@ 
           p>
         dd>
         <dt>
-          <dfn data-lt="Key System(s)">Key Systemdfn>
+          <dfn class="export">Key Systemdfn>
         dt>
         <dd>
           <p>
@@ -8135,7 +8135,7 @@ 
         Privacy
       h2>
       <p>
-        The presence or use of [=Key System(s)=] on a user's device raises a number of privacy
+        The presence or use of [=Key System|Key System(s)=] on a user's device raises a number of privacy
         issues, falling into two categories: (a) user-specific information that may be disclosed by
         the EME interface itself or within [=Key System=] messages and (b) user-specific
         information that may be persistently stored on the user's device.