docs: update package description

Author: dasomji

README.md

@@ -1,6 +1,6 @@
 # lizardtail
 
-`lizardtail` runs a command, watches its output for a localhost server port, exposes that port with [Tailscale Serve](https://tailscale.com/kb/1242/tailscale-serve), and prints the private tailnet URL. Pass `--public` to use Tailscale Funnel intentionally.
+Lizardtail is a Tailscale Serve wrapper around other commands. It runs a command, watches its output for a localhost server port, exposes that port with [Tailscale Serve](https://tailscale.com/kb/1242/tailscale-serve), and prints the private tailnet URL. Pass `--public` to use Tailscale Funnel intentionally.
 
 ```bash
 lizardtail pnpm dev

package.json

@@ -1,7 +1,7 @@
 {
   "name": "lizardtail",
   "version": "0.1.0",
-  "description": "Run a dev server command, detect its port, expose it with Tailscale Serve or Funnel, and print the URL.",
+  "description": "A Tailscale Serve wrapper around other commands that detects dev-server ports and prints usable URLs.",
   "type": "module",
   "bin": {
     "lizardtail": "dist/index.js"