Fix failing 'find metrics tab' spec

app/assets/javascripts/vue_shared/alert_details/components/alert_details.vue

@@ -379,7 +379,7 @@ export default {
 
         <metric-images-tab
           v-if="!isThreatMonitoringPage"
-          data-testid="$options.tabsConfig[1].id"
+          :data-testid="$options.tabsConfig[1].id"
           :title="$options.tabsConfig[1].title"
         />
         <gl-tab :data-testid="$options.tabsConfig[2].id" :title="$options.tabsConfig[2].title">

spec/frontend/vue_shared/alert_details/alert_details_spec.js

@@ -96,7 +96,7 @@ describe('AlertDetails', () => {
   const findEnvironmentName = () => wrapper.findByTestId('environmentName');
   const findEnvironmentPath = () => wrapper.findByTestId('environmentPath');
   const findDetailsTable = () => wrapper.findComponent(AlertDetailsTable);
-  const findMetricsTab = () => wrapper.findByTestId('metrics-tab');
+  const findMetricsTab = () => wrapper.findByTestId('metrics');
 
   describe('Alert details', () => {
     describe('when alert is null', () => {