Merge pull request #2041 from appwrite/update-flutter-quickstart

Update flutter build settings in Sites Docs

Author: adityaoberai

src/routes/docs/products/sites/develop/+page.markdoc

@@ -167,8 +167,8 @@ Your site's dependencies should be managed by the package manager of each langua
 - {% icon icon="flutter" size="m" /%}
 - **Flutter**
 - `pub`
-- (Empty)
-- `flutter build web`
+- `flutter pub get`
+- `flutter build web --release -t lib/main.dart`
 - `./build/web`
 
 ---

src/routes/docs/products/sites/quick-start/flutter/+page.markdoc

@@ -44,8 +44,8 @@ Connect your GitHub account and select the repository you intend to deploy.
 1. Select the **production branch** and **root directory** from your repo.
 2. Verify that the **correct framework** is selected. In case an incorrect framework is visible, pick **Flutter Web** from the drop-down list. 
 3. Confirm the **install command**, **build command**, and **output directory** in the build settings. The default build settings for Flutter Web are:
-    - **Install command:** `N/A` (leave empty)
-    - **Build command:** `flutter build web`
+    - **Install command:** `flutter pub get`
+    - **Build command:** `flutter build web --release -t lib/main.dart`
     - **Output directory:** `./build/web`
 4. Add any **environment variables** required by the site.