Updates headers in ops settings page

app/assets/javascripts/grafana_integration/components/grafana_integration.vue

@@ -55,9 +55,9 @@ export default {
 <template>
   <section id="grafana" class="settings no-animate js-grafana-integration">
     <div class="settings-header">
-      <h4 class="js-section-header">
+      <h3 class="js-section-header h4">
         {{ s__('GrafanaIntegration|Grafana Authentication') }}
-      </h4>
+      </h3>
       <gl-button class="js-settings-toggle">{{ __('Expand') }}</gl-button>
       <p class="js-section-sub-header">
         {{ s__('GrafanaIntegration|Embed Grafana charts in GitLab issues.') }}

app/assets/javascripts/operation_settings/components/external_dashboard.vue

@@ -33,9 +33,9 @@ export default {
 <template>
   <section class="settings no-animate">
     <div class="settings-header">
-      <h4 class="js-section-header">
+      <h3 class="js-section-header h4">
         {{ s__('ExternalMetrics|External Dashboard') }}
-      </h4>
+      </h3>
       <gl-button class="js-settings-toggle">{{ __('Expand') }}</gl-button>
       <p class="js-section-sub-header">
         {{

app/views/projects/settings/operations/_error_tracking.html.haml

@@ -4,7 +4,7 @@
 
 %section.settings.no-animate.js-error-tracking-settings
   .settings-header
-    %h4
+    %h3{ :class => "h4" }
       = _('Error Tracking')
     %button.btn.js-settings-toggle{ type: 'button' }
       = _('Expand')

app/views/projects/settings/operations/_incidents.html.haml

@@ -4,7 +4,7 @@
 
 %section.settings.no-animate.qa-incident-management-settings
   .settings-header
-    %h4= _('Incidents')
+    %h3{ :class => "h4" }= _('Incidents')
     %button.btn.js-settings-toggle{ type: 'button' }
       = _('Expand')
     %p

ee/app/views/projects/settings/operations/_tracing.html.haml

@@ -5,7 +5,7 @@
 
 %section.settings.border-0.no-animate
   .settings-header{ :class => "border-top" }
-    %h4
+    %h3{ :class => "h4" }
       = _("Jaeger tracing")
     %button.btn.js-settings-toggle{ type: 'button' }
       = _('Expand')