update IPIP number

Author: guillaumemichel

src/ipips/ipip-0000.md src/ipips/ipip-0501.mdsrc/ipips/ipip-0000.md renamed to src/ipips/ipip-0501.md

@@ -1,5 +1,5 @@
 ---
-title: "IPIP-0000: Amino DHT HTTP Records"
+title: "IPIP-0501: Amino DHT HTTP Provider Records"
 date: 2025-04-10
 ipip: proposal
 editors:
@@ -16,7 +16,7 @@ editors:
         name: Shipyard
         url: https://ipshipyard.com
 relatedIssues:
-order: 0000
+order: 501
 tags: ['ipips']
 ---