Minor javadoc improvements

Author: gnodet

api/maven-api-core/src/main/java/org/apache/maven/api/Lifecycle.java

@@ -106,7 +106,7 @@ default Stream<Phase> allPhases() {
 
     /**
      * A phase in the lifecycle.
-     *
+     * <p>
      * A phase is identified by its name. It also contains a list of plugins bound to that phase,
      * a list of {@link Link links}, and a list of sub-phases.  This forms a tree of phases.
      */

impl/maven-impl/src/main/java/org/apache/maven/impl/DefaultArtifact.java

@@ -26,7 +26,8 @@
 import org.apache.maven.api.annotations.Nonnull;
 
 /**
- * A wrapper class around a maven resolver artifact.
+ * Default implementation of the Artifact interface.
+ * Wraps an Aether artifact and provides access to its properties.
  */
 public class DefaultArtifact implements Artifact {
     /**

impl/maven-impl/src/main/java/org/apache/maven/impl/DefaultRemoteRepository.java

@@ -23,10 +23,22 @@
 import org.apache.maven.api.RemoteRepository;
 import org.apache.maven.api.annotations.Nonnull;
 
+/**
+ * Default implementation of the RemoteRepository interface.
+ * Wraps an Aether remote repository and provides access to its properties.
+ */
 public class DefaultRemoteRepository implements RemoteRepository {
+    /**
+     * The wrapped Aether remote repository.
+     */
     @Nonnull
     private final org.eclipse.aether.repository.RemoteRepository repository;
 
+    /**
+     * Creates a new wrapper for the given remote repository.
+     *
+     * @param repository the Aether remote repository to wrap
+     */
     public DefaultRemoteRepository(@Nonnull org.eclipse.aether.repository.RemoteRepository repository) {
         this.repository = Objects.requireNonNull(repository, "repository cannot be null");
     }