chore: fix package file name so workflow works correctly in CI

.gitea/workflows/ci.yml

@@ -14,7 +14,7 @@ jobs:
         with:
           dotnet-version: 11.0.x
       - name: Restore dependencies
-        run: dotnet restore StevanFreeborn.AsyncSyncFlagAnalyzer.slnx
+        run: dotnet restore
       - name: Build
         run: dotnet build --no-restore
       - name: Check formatting