[DOCS] Identifies cloud settings for APM (elastic#66935)

Author: gchaps

docs/settings/apm-settings.asciidoc

@@ -43,29 +43,29 @@ Changing these settings may disable features of the APM App.
 | `xpack.apm.enabled`
   | Set to `false` to disable the APM app. Defaults to `true`.
 
-| `xpack.apm.ui.enabled`
+| `xpack.apm.ui.enabled` {ess-icon}
   | Set to `false` to hide the APM app from the menu. Defaults to `true`.
 
 | `xpack.apm.ui.transactionGroupBucketSize`
   | Number of top transaction groups displayed in the APM app. Defaults to `100`.
 
-| `xpack.apm.ui.maxTraceItems`
+| `xpack.apm.ui.maxTraceItems` {ess-icon}
   | Maximum number of child items displayed when viewing trace details. Defaults to `1000`.
 
-| `apm_oss.indexPattern`
+| `apm_oss.indexPattern` {ess-icon}
   | The index pattern used for integrations with Machine Learning and Query Bar.
   It must match all apm indices. Defaults to `apm-*`.
 
-| `apm_oss.errorIndices`
+| `apm_oss.errorIndices` {ess-icon}
   | Matcher for all {apm-server-ref}/error-indices.html[error indices]. Defaults to `apm-*`.
 
 | `apm_oss.onboardingIndices`
   | Matcher for all onboarding indices. Defaults to `apm-*`.
 
-| `apm_oss.spanIndices`
+| `apm_oss.spanIndices` {ess-icon}
   | Matcher for all {apm-server-ref}/span-indices.html[span indices]. Defaults to `apm-*`.
 
-| `apm_oss.transactionIndices`
+| `apm_oss.transactionIndices` {ess-icon}
   | Matcher for all {apm-server-ref}/transaction-indices.html[transaction indices]. Defaults to `apm-*`.
 
 | `apm_oss.metricsIndices`