Fix bad path to systemctl (#302)

src/common-utils/devcontainer-feature.json

 {
     "id": "common-utils",
-    "version": "1.1.4",
+    "version": "1.1.5",
     "name": "Common Debian Utilities",
     "documentationURL": "https://github.com/devcontainers/features/tree/main/src/common-utils",
     "description": "Installs a set of common command line utilities, Oh My Zsh!, and sets up a non-root user.",

src/common-utils/install.sh

@@ -292,7 +292,7 @@ cat << 'EOF' > /usr/local/bin/systemctl
 #!/bin/sh
 set -e
 if [ -d "/run/systemd/system" ]; then
-    exec /bin/systemctl/systemctl "$@"
+    exec /bin/systemctl "$@"
 else
     echo '\n"systemd" is not running in this container due to its overhead.\nUse the "service" command to start services instead. e.g.: \n\nservice --status-all'
 fi