Fix test plugin names and update documentation examples to match actual output

Co-authored-by: swissspidy <[email protected]>

Author: Copilot

features/plugin-dependencies.feature

@@ -75,13 +75,13 @@ Feature: Plugin dependencies support
       Success:
       """
 
-    When I run `wp plugin list --name=akismet --field=status`
+    When I run `wp plugin list --name=duplicate-post --field=status`
     Then STDOUT should be:
       """
       inactive
       """
 
-    When I run `wp plugin list --name=hello --field=status`
+    When I run `wp plugin list --name=debug-bar --field=status`
     Then STDOUT should be:
       """
       inactive

src/Plugin_Command.php

@@ -1079,11 +1079,11 @@ protected function filter_item_list( $items, $args ) {
 	 *
 	 *     # Install a plugin with all its dependencies
 	 *     $ wp plugin install my-plugin --with-dependencies
-	 *     Installing dependency: required-plugin-1 (1.2.3)
+	 *     Installing Required Plugin 1 (1.2.3)
 	 *     Plugin installed successfully.
-	 *     Installing dependency: required-plugin-2 (2.0.0)
+	 *     Installing Required Plugin 2 (2.0.0)
 	 *     Plugin installed successfully.
-	 *     Installing my-plugin (3.5.0)
+	 *     Installing My Plugin (3.5.0)
 	 *     Plugin installed successfully.
 	 *     Success: Installed 3 of 3 plugins.
 	 */