refactor: update CONTRIBUTING.md

CONTRIBUTING.md

@@ -2,7 +2,12 @@
 
 We greatly appreciate contributions to the vscode-java-dependency project. Your efforts help us maintain and improve this extension. To ensure a smooth contribution process, please follow these guidelines.
 
-## Setup Guide
+## Prerequisites
+- [JDK](https://www.oracle.com/java/technologies/downloads/?er=221886)
+- [Node.JS](https://nodejs.org/en/)
+- [VSCode](https://code.visualstudio.com/)
+
+## Build and Run
 
 To set up the vscode-java-dependency project, follow these steps:
 
@@ -19,11 +24,12 @@ To set up the vscode-java-dependency project, follow these steps:
      npm install
      ```
 
-3. **Run the Extension**:
+3. **Run/Debug the Extension**:
    - Open the "Run and Debug" view in Visual Studio Code.
    - Run the "Run Extension" task.
 
-4. **Attach to Plugin**:
+4. **Attach to Plugin[Debug Java]**:
+   - Prerequisite: Ensure that the extension is activated, meaning the Java process is already launched. This is required for the task to run properly.
    - Open the "Run and Debug" view in Visual Studio Code.
    - Run the "Attach to Plugin" task.
    - Note: This task is required only if you want to debug Java code [jdtls.ext](./jdtls.ext). It requires the [vscode-pde](https://marketplace.visualstudio.com/items?itemName=yaozheng.vscode-pde) extension to be installed.