Update vite.mdx (#81)

update 'vite-plugin-solid' import

apps/docs/src/routes/docs/installation/vite.mdx

@@ -58,7 +58,7 @@ npm i -D @types/node
 ```ts
 import path from "path"
 
-import solid from "@vitejs/plugin-solid"
+import solid from 'vite-plugin-solid';
 import { defineConfig } from "vite"
 
 export default defineConfig({