add mini-css-extract-plugin to devDependencies

Author: zeitamin

package.json

@@ -52,6 +52,7 @@
     "clean-webpack-plugin": "^3.0.0",
     "file-loader": "^6.2.0",
     "html-webpack-plugin": "^4.5.0",
+    "mini-css-extract-plugin": "^1.5.0",    
     "style-loader": "^2.0.0",
     "terser-webpack-plugin": "^5.1.1",
     "uglifyjs-webpack-plugin": "^2.2.0",
@@ -60,7 +61,6 @@
     "webpack-log": "^3.0.1"
   },
   "dependencies": {
-    "@cocreate/docs": "^1.1.14",
-    "mini-css-extract-plugin": "^1.5.0"
+    "@cocreate/docs": "^1.1.14"
   }
 }