cmd/internal/archive: make error message contain printable characters only

cmd/internal/archive: make error message contain printable characters only

Use %q instead of %s to print unchecked bytes. Also strip the
"\x00" byte, as "go116ld" reads better than "\x00go116ld".

Change-Id: Id3d1f426ea91d53a55b928dac4a68e1333b80158
Reviewed-on: https://go-review.googlesource.com/c/go/+/315750
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>