Fix typo.

Author: dvc94ch

.github/workflows/main.yml

@@ -1,6 +1,6 @@
 on: [push, pull_request]
 
-name: Flutter App Template
+name: Flutter App Demo
 
 jobs:
   main:

.github/workflows/release.yml

@@ -61,7 +61,7 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          upload_url: ${{ steps.create-release.outputs.upload_url }}
           asset_path: './target/flutter/release/flutter-app-demo-x86_64.AppImage'
           asset_name: 'flutter-app-demo-x86_64.AppImage'
           asset_content_type: application/octet-stream