Update BundleManager.cs to fix typo

framework/src/Volo.Abp.AspNetCore.Components.MauiBlazor.Bundling/BundleManager.cs

@@ -114,7 +114,7 @@ public class BundleManager : BundleManagerBase, ITransientDependency
         #if DEBUG
                 return true;
         #else
-                retur false;
+                return false;
         #endif
     }
 
@@ -122,4 +122,4 @@ public class BundleManager : BundleManagerBase, ITransientDependency
     {
         return MauiBlazorContentFileProvider;
     }
-}
+}