use EIP number and link to discussions thread

Author: Brechtpd

EIPS/eip-introspection.md EIPS/eip-7814.mdEIPS/eip-introspection.md renamed to EIPS/eip-7814.md

@@ -3,7 +3,7 @@ eip: 7814
 title: Introspection precompiles
 description: Introspection precompiles that expose the current block context to the EVM
 author: Brecht Devos (@Brechtpd)
-discussions-to: TBD
+discussions-to: https://ethereum-magicians.org/t/eip-7814-introspection-precompiles/21872
 status: Draft
 type: Standards Track
 category: Core