fix(index.html): update balance section heading to reflect only ETC balance

index.html

@@ -660,7 +660,7 @@
                 </aside>
                 <section id="balance_section" class="grid gap-1-5">
                     <h2>
-                        Check ETC, USDC and USDT balance
+                        Check ETC balance
                     </h2>
                     <sm-form oninvalid="handleInvalidSearch()">
                         <div id="input_wrapper">