script, doc: guix touchups

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
+1. Uninstall Guix itself according to the way you installed it (e.g. `sudo apt
-   purge guix` for Ubuntu packaging, `sudo make uninstall` for
+   purge guix` for Ubuntu packaging, `sudo make uninstall` for a build from source).
-   built-from-source).
 2. Remove all build users and groups
 
    You may check for relevant users and groups using:

doc/build-openbsd.md

@@ -68,7 +68,7 @@ export AUTOMAKE_VERSION=1.16
 Make sure `BDB_PREFIX` is set to the appropriate path from the above steps.
 
 Note that building with external signer support currently fails on OpenBSD,
-hence you have to explicitely disable it by passing the parameter
+hence you have to explicitly disable it by passing the parameter
 `--disable-external-signer` to the configure script.
 (Background: the feature requires the header-only library boost::process, which
 is available on OpenBSD 6.9 via Boost 1.72.0, but contains certain system calls