Refactor AppImage step

Author: Reim-developer

.github/workflows/linux.yml

@@ -31,7 +31,7 @@ jobs:
           run: |
             ./scripts/ci_linux.sh release-build
 
-        - name: Package AppImage
+        - name: Build AppImage
           shell: bash
           run: |
             ./${{ env.CI_SCRIPT }} image-build
@@ -40,4 +40,4 @@ jobs:
           uses: actions/upload-artifact@v4
           with:
             name: ${{ env.APP_NAME }}
-            path: ${{ env.APP_NAME }}-x86_64.AppImage
+            path: ${{ env.APP_NAME }}.AppImage