Address review comments

Signed-off-by: Aravindhan Ayyanathan <aravindhan.a@est.tech>

Author: aravindtga

documentation/content/en/book/02-concepts/_index.md

@@ -154,7 +154,7 @@ Package "wordpress" (independent)
     ├── [Kptfile]  Kptfile mysql
     ├── [deployment.yaml]  PersistentVolumeClaim mysql-pv-claim
     ├── [deployment.yaml]  Deployment wordpress-mysql
-    └── [deployment.yaml]  Service wordpress-mysql
+    └── [service.yaml]  Service wordpress-mysql
 ```
 
 This _package hierarchy_ contains two packages:

documentation/content/en/book/03-packages/_index.md

@@ -148,7 +148,7 @@ Package "wordpress" (independent)
     ├── [Kptfile]  Kptfile mysql
     ├── [deployment.yaml]  PersistentVolumeClaim mysql-pv-claim
     ├── [deployment.yaml]  Deployment wordpress-mysql
-    └── [deployment.yaml]  Service wordpress-mysql
+    └── [service.yaml]  Service wordpress-mysql
 ```
 
 See the [tree command reference](../../reference/cli/pkg/tree/) for usage.
@@ -346,7 +346,7 @@ Package "wordpress" (independent)
     ├── [Kptfile]  Kptfile mysql
     ├── [deployment.yaml]  PersistentVolumeClaim mysql-pv-claim
     ├── [deployment.yaml]  Deployment wordpress-mysql
-    └── [deployment.yaml]  Service wordpress-mysql
+    └── [service.yaml]  Service wordpress-mysql
 ```
 
 First, delete the `mysql` subpackage. Deleting a subpackage is done by deleting the subdirectory, as follows:

documentation/content/en/reference/cli/pkg/tree/_index.md

@@ -63,7 +63,7 @@ Package "wordpress" (independent)
 └── Package "mysql" (dependent)
     ├── [Kptfile]  Kptfile mysql
     ├── [deployment.yaml]  Deployment wordpress-mysql
-    └── [deployment.yaml]  Service wordpress-mysql
+    └── [service.yaml]  Service wordpress-mysql
 ```
 
 <!--mdtogo-->