Add construction notice

Author: oxkitsune

index.html

@@ -126,6 +126,7 @@ <h1 class="title is-1 publication-title">DNT-RL: Soccer Behavior Learning in Par
         <h2 class="subtitle has-text-centered">
           <span class="dnerf">DNT-RL</span> learning a walk to point policy with 64 parallel agents.
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+        <h4>PAGE IS UNDERCONSTRUCTION</h4>
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