Polish 1c891c7 (#5804)

Author: izeye

docs/modules/ROOT/pages/implementations/prometheus.adoc

@@ -216,7 +216,7 @@ registry.counter("test", "first", "1", "second", "none").increment();
 registry.counter("test", "first", "none", "second", "2").increment();
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-You can change the default warning behavior by registering a meter registration failed listener:
+In addition to the warning, you can register a meter registration failed listener to handle the failure:
 [source,java]
 ----
 registry.config().onMeterRegistrationFailed((id, reason) -> {