docs: update Examples section of the readme file (#45)

* docs: add "Running Individual Setup, Build, and Test Steps" section in the example

* docs: adjust step name in the example

README.md

@@ -45,7 +45,7 @@ jobs:
  with:
  path: workspace
 
- - name: Build and test
+ - name: Build and test workspace
  uses: ichiro-its/[email protected]
 ```
 
@@ -56,12 +56,27 @@ jobs:
 You can specify the ROS 2 distribution to be used by providing it as an input parameter:
 
 ```yaml
-- name: Build and test
+- name: Build and test workspace
  uses: ichiro-its/[email protected]
  with:
  distro: rolling
 ```
 
+#### Running Individual Setup, Build, and Test Steps
+
+You can use the `setup`, `build`, and `test` sub-actions to run each action individually for the setup, build, and test steps:
+
+```yaml
+- name: Setup workspace
+ uses: ichiro-its/ros2-ws-action/[email protected]
+
+- name: Build workspace
+ uses: ichiro-its/ros2-ws-action/[email protected]
+
+- name: Test workspace
+ uses: ichiro-its/ros2-ws-action/[email protected]
+```
+
 ## License
 
 This project is licensed under the terms of the [MIT License](./LICENSE).