fix: exclude screenshot from published package

Author: ryoppippi

README.md

@@ -5,7 +5,7 @@
 [![npm version](https://badge.fury.io/js/ccusage.svg)](https://www.npmjs.com/package/ccusage)
 
 <div align="center">
-  <img src="./docs/screenshot.png">
+  <img src="https://github.com/ryoppippi/ccusage/blob/main/docs/screenshot.png?raw=true">
 </div>
 
 A CLI tool for analyzing Claude Code usage from local JSONL files.

package.json

@@ -15,7 +15,7 @@
 	"author": "ryoppippi <ryoppippi.el@gmail.com> (https://github.com/ryoppippi)",
 	"type": "module",
 	"bin": "./dist/index.js",
-	"files": ["dist", "docs"],
+	"files": ["dist"],
 	"scripts": {
 		"build": "tsdown ./index.ts --publint --unused",
 		"format": "biome check --write .",