fix: consistent heading hierarchy

Author: chedieck

components/Admin/ChronikURLs.tsx

@@ -5,7 +5,7 @@ interface IProps {
 }
 export default function ChronikURLs ({ chronikUrls }: IProps): JSX.Element {
   return <>
-  <h2>Chronik URLs</h2>
+  <h3>Chronik URLs</h3>
   <div className="paybutton-table-ctn columns">
     <div>
       <h4>eCash</h4>

components/Admin/RegisteredUsers.tsx

@@ -47,7 +47,7 @@ export default function RegisteredUsers ({ users }: IProps): JSX.Element {
   }))
 
   return <>
-    <h2>Registered Users</h2>
+    <h3>Registered Users</h3>
     <TableContainer columns={columns} data={data} ssr />
   </>
 }

components/Admin/SubscribedAddresses.tsx

@@ -42,10 +42,10 @@ export default function SubscribedAddresses (): JSX.Element {
   )
 
   return <>
-    <h2>Subscribed Addresses</h2>
-        <h3> eCash</h3>
+    <h3>Subscribed Addresses</h3>
+        <h4> eCash</h4>
       <TableContainer columns={columns} data={ecashSubscribedAddresses ?? []} ssr/>
-        <h3> Bitcoin Cash</h3>
+        <h4> Bitcoin Cash</h4>
       <TableContainer columns={columns} data={bitcoincashSubscribedAddresses ?? []} ssr/>
   </>
 }