Fix compatibility with Rollup

sindresorhus · sindresorhus · commit 9411b377b5ec · 2024-02-04T13:15:34.000+07:00
Fixes #111
diff --git a/package.json b/package.json
@@ -11,7 +11,6 @@
 		"url": "https://sindresorhus.com"
 	},
 	"main": "github-markdown.css",
-	"sideEffects": false,
 	"engines": {
 		"node": ">=10"
 	},
