Update index.html

TD informative reference

index.html

@@ -1598,7 +1598,7 @@ <h2>Overview</h2>
             <p>
                 A <a>Thing</a> is the abstraction of a physical or virtual entity (e.g., a device or a room) and is described by standardized metadata.
                 <span class="rfc2119-assertion" id="arch-td-metadata">
-                  In W3C WoT, the description metadata MUST be a WoT Thing Description (TD) [[!WOT-THING-DESCRIPTION]].
+                  In W3C WoT, the description metadata MUST be a WoT Thing Description (TD) [[?WOT-THING-DESCRIPTION]].
                 </span>
                 <span class="rfc2119-assertion" id="arch-td-consumers-process">
                   <a>Consumers</a> MUST be able to parse and process the <a>TD</a> representation format, which is based on JSON [[!RFC8259]].
@@ -2474,7 +2474,7 @@ <h1>WoT Building Blocks</h1>
         <section id="sec-thing-description">
             <h2>WoT Thing Description</h2>
             <p> The <a>WoT Thing Description</a> (TD) specification
-                [[!WOT-THING-DESCRIPTION]] defines an <em>information model</em>
+                [[?WOT-THING-DESCRIPTION]] defines an <em>information model</em>
                 based on a semantic vocabulary and a <em>serialized
                 representation based on JSON</em>. <a>TDs</a> provide rich metadata
                 for <a>Things</a> in a way that is both human-readable and
@@ -3055,7 +3055,7 @@ <h2>Thing and Consumer Roles</h2>
                 Privacy issues are discussed
                 at a high level in <a href="#sec-security-considerations"></a> 
                 and a more detailed discussion is given in the 
-                [[!WOT-THING-DESCRIPTION]]
+                [[?WOT-THING-DESCRIPTION]]
                 specification.
             </p>
             <p>Internal system functions of a device, such as interacting with attached sensors and actuators,