Further style, etc. fixes

metrics/microprofile/cdi/src/main/java/io/helidon/metrics/microprofile/cdi/MetricsCdiExtension.java

@@ -23,6 +23,9 @@
 
 import jakarta.enterprise.inject.spi.ProcessManagedBean;
 
+/**
+ * MP Metrics CDI extension.
+ */
 public class MetricsCdiExtension extends HelidonRestCdiExtension<MpMetricsFeature> {
 
     private static final System.Logger LOGGER = System.getLogger(MetricsCdiExtension.class.getName());

metrics/microprofile/cdi/src/main/java/io/helidon/metrics/microprofile/cdi/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2023 Oracle and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * MP Metrics CDI extension and related files.
+ */
+package io.helidon.metrics.microprofile.cdi;

metrics/microprofile/cdi/src/main/java/module-info.java

@@ -32,4 +32,4 @@
     requires microprofile.config.api;
 
     provides Extension with MetricsCdiExtension;
-}
+}