chore(ipip-0513): shorten title, fix missing newline at EOF

Author: lidel

src/ipips/ipip-0513.md

@@ -1,5 +1,5 @@
 ---
-title: "IPIP-0513: Delegated Routing V1 HTTP API Returns 200 for Empty Results"
+title: "IPIP-0513: Routing V1 Returns 200 for Empty Results"
 date: 2025-12-17
 ipip: ratified
 editors:
@@ -221,4 +221,4 @@ Clients MUST correctly handle:
 
 ### Copyright
 
-Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).
+Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).