Update docs + package-lock.json / Fix Playground

Author: Gugustinette

docs/getting-started/installation.md

@@ -7,23 +7,23 @@ outline: deep
 ## Basic (Recommended)
 
 ```bash
-npx nuxi@latest module add nuxt3-leaflet
+npx nuxi@latest module add @nuxtjs/leaflet
 ```
 
 ## Manual
 
-- Add `nuxt3-leaflet` dependency to your project
+- Add `@nuxtjs/leaflet` dependency to your project
 
 ```bash
-npm install nuxt3-leaflet
+npm install @nuxtjs/leaflet
 ```
 
-- Add `nuxt3-leaflet` to the `modules` section of `nuxt.config.ts`
+- Add `@nuxtjs/leaflet` to the `modules` section of `nuxt.config.ts`
 
 ```ts
 export default defineNuxtConfig({
   modules: [
-    'nuxt3-leaflet'
+    '@nuxtjs/leaflet'
   ]
 })
 ```