fix: get app resources tree view (#26166)

Signed-off-by: Patroklos Papapetrou <ppapapetrou76@gmail.com>

docs/user-guide/commands/argocd_app.md

@@ -97,7 +97,7 @@ argocd app [flags]
 * [argocd app patch](argocd_app_patch.md)	 - Patch application
 * [argocd app patch-resource](argocd_app_patch-resource.md)	 - Patch resource in an application
 * [argocd app remove-source](argocd_app_remove-source.md)	 - Remove a source from multiple sources application.
-* [argocd app resources](argocd_app_resources.md)	 - List resource of application
+* [argocd app resources](argocd_app_resources.md)	 - List resources of application
 * [argocd app rollback](argocd_app_rollback.md)	 - Rollback application to a previous deployed version by History ID, omitted will Rollback to the previous version
 * [argocd app set](argocd_app_set.md)	 - Set application parameters
 * [argocd app sync](argocd_app_sync.md)	 - Sync an application to its target state

docs/user-guide/commands/argocd_app_resources.md

@@ -2,18 +2,36 @@
 
 ## argocd app resources
 
-List resource of application
+List resources of application
 
 ```
 argocd app resources APPNAME [flags]
 ```
 
+### Examples
+
+```
+  # List first-level resources of application
+  argocd app resources my-app --refresh
+  
+  # List only the orphaned resources of application
+  argocd app resources my-app --orphaned
+  
+  # Shows resource hierarchy with parent-child relationships
+  argocd app resources my-app --output tree
+  
+  # Shows resource hierarchy with parent-child relationships including information about age, health and reason
+  argocd app resources my-app --output tree=detailed
+```
+
 ### Options
 
 ```
   -h, --help             help for resources
       --orphaned         Lists only orphaned resources
-      --output string    Provides the tree view of the resources
+      --output string    Output format. One of: tree|tree=detailed. 
+                           tree: Shows resource hierarchy with parent-child relationships
+                           tree=detailed: Same as tree, but includes AGE, HEALTH, and REASON columns
       --project string   The name of the application's project - specifying this allows the command to report "not found" instead of "permission denied" if the app does not exist
 ```