Remove '^S' from "etc_musl.go" and add closing quotation mark to
"libc_musl_linux_amd64.go". Both of these small errors existed in
machine-readable comments, which caused problems when building a package
using Fedora 40's rpmbuild.

Signed-off-by: W. Michael Petullo <mike@flyn.org>

fix errant characters in source code

See merge request !16