update placeholder blocks

src/widgets/glances/metrics/gpu.jsx

@@ -45,14 +45,14 @@ export default function Component({ service }) {
   }
 
   if (!data) {
-    return <Container><Block position={{bottom: 2, left: 2}}>-</Block></Container>;
+    return <Container><Block position="bottom-3 left-3">-</Block></Container>;
   }
 
   // eslint-disable-next-line eqeqeq
   const gpuData = data.find((item) => item[item.key] == gpuName);
 
   if (!gpuData) {
-    return <Container><Block position={{bottom: 2, left: 2}}>-</Block></Container>;
+    return <Container><Block position="bottom-3 left-3">-</Block></Container>;
   }
 
   return (