docs: replace safety@ with partner@ in contact footer

index.html

@@ -604,7 +604,7 @@ openral benchmark report</code></pre>
     <a href="https://openral.github.io/openral/">Docs</a>
     <a href="https://discord.gg/3paXT2bVyB">Discord</a>
     <a href="mailto:hello@openral.dev">hello@openral.dev</a>
-    <a href="mailto:safety@openral.dev">safety@openral.dev</a>
+    <a href="mailto:partner@openral.dev">partner@openral.dev</a>
     <span>Apache-2.0 · © OpenRAL contributors</span>
   </div>