Merge bitcoin#22538: doc: fix command typo in guix README

198ceb8 script, doc: guix touchups (jonatack)
d7b7f61 Updated Readme, Corrected the codesign typo (h)

Pull request description:

ACKs for top commit:
  jamesob:
    ACK bitcoin@198ceb8
  jonatack:
    ACK 198ceb8

Tree-SHA512: 408360cebb51cff330fdd5d5d8ae91a168cdc99fb1377913fd9119e6eba536e58f87ff5c5b479e21a21fa3403323b137c338005bbd67e6fd24314929cdff9325

Author: fanquake

contrib/guix/README.md

@@ -11,7 +11,7 @@ We achieve bootstrappability by using Guix as a functional package manager.
 
 # Requirements
 
-Conservatively, a x86_64 machine with:
+Conservatively, you will need an x86_64 machine with:
 
 - 16GB of free disk space on the partition that /gnu/store will reside in
 - 8GB of free disk space **per platform triple** you're planning on building
@@ -437,9 +437,8 @@ In the extraordinarily rare case where you messed up your Guix installation in
 an irreversible way, you may want to completely purge Guix from your system and
 start over.
 
-1. Uninstall Guix itself according to the way you installed it. (e.g. `sudo apt
-   purge guix` for Ubuntu packaging, `sudo make uninstall` for
-   built-from-source).
+1. Uninstall Guix itself according to the way you installed it (e.g. `sudo apt
+   purge guix` for Ubuntu packaging, `sudo make uninstall` for a build from source).
 2. Remove all build users and groups
 
    You may check for relevant users and groups using: