Polish

See gh-32484

Author: bclozel

spring-boot-project/spring-boot-docs/src/docs/asciidoc/actuator/metrics.adoc

@@ -862,10 +862,10 @@ For that, you have to inject the auto-configured builder and use it to create in
 * `RestTemplateBuilder` for `RestTemplate`
 * `WebClient.Builder` for `WebClient`
 
-You can also manually apply the customizers responsible for this instrumentation, namely `MetricsRestTemplateCustomizer` and `MetricsWebClientCustomizer`.
+You can also manually apply the customizers responsible for this instrumentation, namely `ObservationRestTemplateCustomizer` and `MetricsWebClientCustomizer`.
 
 By default, metrics are generated with the name, `http.client.requests`.
-You can customize the name by setting the configprop:management.metrics.web.client.request.metric-name[] property.
+You can customize the name by setting the configprop:management.observations.http.client.requests.name[] property.
 
 By default, metrics generated by an instrumented client are tagged with the following information: