vim: fix bash template

etc/soft/nvim/template/sh.vim

@@ -31,11 +31,11 @@ function die() {
 	exit 1
 }
 
-[[ "${BASH_VERSION[0]}" -lt 5 ]] && die "ERROR: Bash >= 5 required."
+[[ "${BASH_VERSINFO[0]}" -lt 5 ]] && die "ERROR: Bash >= 5 required."
 
 DEPENDENCIES=()
 
 for dependency in "${DEPENDENCIES[@]}"; do
-	command -V "$dependency" 2>&- || die "ERROR: Command $dependency not found."
+	command -V "$dependency" 2>&- || die "ERROR: The required '$dependency' command is not found."
 done