Update fip-0039.md (#1179)

* Update fip-0039.md

Adding a public record of "Reason for Closure" and linking it to the comment for community transparency

Link: #1175 (comment)

* Update FIPS/fip-0039.md

Co-authored-by: Rod Vagg <[email protected]>

---------

Co-authored-by: Adrian Lanzafame <[email protected]>
Co-authored-by: Rod Vagg <[email protected]>

Author: 3 people

FIPS/fip-0039.md

@@ -7,6 +7,7 @@ status: Closed
 type: Technical
 category: Core
 created: 2022-02-16
+rejection-reason: https://github.com/filecoin-project/FIPs/pull/1175#issue-3213552112
 ---
 
 # FIP-0039: Filecoin Message Replay Protection