fix: replace substr by substring

Co-authored-by: pjt <26487010+PierreJeanjacquot@users.noreply.github.com>

Author: ErwanDecoster

src/utils/format.ts

@@ -1,9 +1,9 @@
 import { multiaddr } from '@multiformats/multiaddr';
 
 export const multiaddrHexToHuman = (hexString: string): string => {
-  if (hexString.substr(0, 2) !== '0x') return hexString;
+  if (hexString.substring(0, 2) !== '0x') return hexString;
   let res: string;
-  const buffer: Buffer = Buffer.from(hexString.substr(2), 'hex');
+  const buffer: Buffer = Buffer.from(hexString.substring(2), 'hex');
   try {
     res = multiaddr(new Uint8Array(buffer)).toString();
   } catch {