doc: clarify that only one Python version is required to build

PR-URL: #38894
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Harshitha K P <harshitha014@gmail.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Zijian Liu <lxxyxzj@gmail.com>

BUILDING.md

@@ -234,7 +234,7 @@ The Node.js project supports Python >= 3 for building and testing.
 
 * `gcc` and `g++` >= 8.3 or newer, or
 * GNU Make 3.81 or newer
-* Python 3.6, 3.7, 3.8, and 3.9 (see note above)
+* Python 3.6, 3.7, 3.8, or 3.9 (see note above)
 
 Installation via Linux package manager can be achieved with:
 
@@ -249,7 +249,7 @@ FreeBSD and OpenBSD users may also need to install `libexecinfo`.
 #### macOS prerequisites
 
 * Xcode Command Line Tools >= 11 for macOS
-* Python 3.6, 3.7, 3.8, and 3.9 (see note above)
+* Python 3.6, 3.7, 3.8, or 3.9 (see note above)
 
 macOS users can install the `Xcode Command Line Tools` by running
 `xcode-select --install`. Alternatively, if you already have the full Xcode