Correct some PR URLs in the v22.10.1 Release Notes

Author: zah

CHANGELOG.md

@@ -13,11 +13,10 @@ Nimbus `v22.10.1` is a `low-urgency` point release introducing support for the o
 ### Fixes:
 
 * Nimbus was slowly leaking file descriptors when paired with an external builder:
-https://github.com/status-im/nim-chronos/pull/323
-
+  https://github.com/status-im/nimbus-eth2/pull/4235
 
 * Nimbus could potentially crash under a poor network connectivity to an external builder:
-https://github.com/status-im/nimbus-eth2/pull/4222
+  https://github.com/status-im/nimbus-eth2/pull/4222
 
 
 2022-10-03 v22.10.0