rename min_amount endpoint to min_deposit

index.html

@@ -444,7 +444,7 @@ async function fetchData() {
 async function fetchMinAmount() {
   const chain = getChain();
   try {
-    const r = await fetch('/min_amount/' + chain);
+    const r = await fetch('/min_deposit/' + chain);
     const val = parseInt(await r.text(), 10);
     if (isNaN(val)) throw new Error('invalid');
     minAmount = val;