add smaller architecture diag

Author: tenfoldpaper

index.html

@@ -212,7 +212,7 @@ <h2 class="title is-3">Abstract</h2>
         <div class="column">
           <div class="hero-body">
             <h2 class="title is-3">Architecture</h2>
-            <img src="static/images/rcs_architecture.svg" alt="RCS Architecture."
+            <img src="static/images/rcs_architecture_small.svg" alt="RCS Architecture."
               width="100%">
             <div class="content has-text-justified">
               Fig. 1: The applications on the left side interface with the environment on the right side, which can be a simulation or a real robot, through the Gymnasium interface. Sensors, actuators, and data observers wrap the environment by mutating the action, and/or the observation space.<br>