docs: remove unused files

package.json

@@ -1,8 +1,8 @@
 {
   "name": "heti",
   "version": "0.3.1",
-  "description": "赫蹏",
-  "main": "index.scss",
+  "description": "赫蹏是专为中文内容展示设计的排版样式增强。它基于通行的中文排版规范而来，可以为网站的读者带来更好的文章阅读体验。",
+  "main": "lib/heti.scss",
   "directories": {
     "lib": "lib"
   },
@@ -32,5 +32,16 @@
     "stylelint-config-recommended-scss": "^4.1.0",
     "stylelint-config-standard": "^19.0.0",
     "stylelint-scss": "^3.13.0"
+  },
+  "stylelint": {
+    "extends": ["stylelint-config-standard", "stylelint-config-recommended-scss"],
+    "rules": {
+      "no-descending-specificity": [
+        true,
+        {
+          "ignore": ["selectors-within-list"]
+        }
+      ]
+    }
   }
 }