Merge bitcoin/bitcoin#24345: doc: Release process: fix broken link to Guix building docs

64645fa Release process: fix broken link to Guix building docs (Jeremy Rand)

Pull request description:

  Not 100% sure whether this link was always broken or if the Guix docs renamed the heading at some point.  Either way, seems good to fix it.

ACKs for top commit:
  fanquake:
    ACK 64645fa

Tree-SHA512: 4932059fe583c0d27c70febf8f4dd8cffd3e15567359c5429d2691e221afc6da319bf43ebcd264ae0f98302e1eeb67ffd763d3d7d06ab1633913555ee7461643

Author: fanquake

upgrade-tracking/commit-database.csv

@@ -496,3 +496,4 @@ fa6065661a86656a29e89ed1a3529cb7103f5394,2022-02-11,MarcoFalke,"refactor: Avoid
 3bb93940703e9d0f4bffda98f4fe22fb1487db34,2022-02-11,fanquake,"Merge bitcoin/bitcoin#23998: build: support OpenBSD in depends",success,modified,patch-modifier,upgrade-tracking/patches/modified/3bb93940703e9d0f4bffda98f4fe22fb1487db34.patch,Applied with DigiByte preservation
 876b91c3833d388279baeae82e3efcb3d462f2ca,2022-02-13,Jeremy Rand,"release-process: Specify remote name in "git fetch"",success,none,automatic,upgrade-tracking/patches/success/876b91c3833d388279baeae82e3efcb3d462f2ca.patch,Clean cherry-pick
 b1aa3b1959cab1ad8bb6d0a6a5d05c87c1271cdb,2022-02-13,MarcoFalke,"Merge bitcoin/bitcoin#24330: doc: release-process: Specify remote name in "git fetch"",success,modified,patch-modifier,upgrade-tracking/patches/modified/b1aa3b1959cab1ad8bb6d0a6a5d05c87c1271cdb.patch,Applied with DigiByte preservation
+6b8e4977b8323b35856ea9f6892cda98c8a2ba58,2022-02-15,MarcoFalke,"Merge bitcoin/bitcoin#24342: test: remove `import socket` in test_ipv6_local",success,modified,patch-modifier,upgrade-tracking/patches/modified/6b8e4977b8323b35856ea9f6892cda98c8a2ba58.patch,Applied with DigiByte preservation

upgrade-tracking/last-processed.txt

@@ -1 +1 @@
-1695d6661bf25d82694774011164ddbfbfb51fdd
+6b8e4977b8323b35856ea9f6892cda98c8a2ba58