Fix review comments

Signed-off-by: Yevhenii Huselietov <yevhenii.huselietov@gmail.com>

.changeset/swift-kings-add.md

@@ -1,5 +1,5 @@
 ---
-'@backstage/plugin-newrelic-dashboard': minor
+'@backstage/plugin-newrelic-dashboard': patch
 ---
 
 Fix the styles for NewRelicDashboard, add more responsiveness

plugins/newrelic-dashboard/src/components/NewRelicDashboard/DashboardSnapshotList/DashboardSnapshot.tsx

@@ -31,7 +31,7 @@ import useObservable from 'react-use/lib/useObservable';
 const useStyles = makeStyles(
   theme => ({
     cardSelect: {
-      margin: '15px 10px 0 0',
+      margin: theme.spacing(2, 1, 0, 0),
     },
     img: {
       width: '100%',

plugins/newrelic-dashboard/src/components/NewRelicDashboard/DashboardSnapshotList/DashboardSnapshotList.tsx

@@ -30,11 +30,11 @@ interface TabPanelProps {
 }
 
 const tabPanelStyles = makeStyles(
-  {
+  theme => ({
     tabPanel: {
-      marginTop: '4px',
+      marginTop: theme.spacing(0.5),
     },
-  },
+  }),
   { name: 'BackstageNewRelicDashboardTabPanel' },
 );