SUBMARINE-1410. Update website node to 18

### What is this PR for?
Update website node to 18(lts)

### What type of PR is it?
Documentation

### Todos
* [x] - Set node to 18 in git workflow

### What is the Jira issue?
https://issues.apache.org/jira/browse/SUBMARINE-1410

### How should this be tested?
CI

### Screenshots (if appropriate)

### Questions:
* Do the license files need updating? No
* Are there breaking changes for older versions? No
* Does this need new documentation? No

Author: cdmikechen <cdmikechen@apache.org>

Signed-off-by: cdmikechen <cdmikechen@apache.org>

Closes #1106 from cdmikechen/SUBMARINE-1410 and squashes the following commits:

69cdb1ad [cdmikechen] update node to 18
diff --git a/.github/workflows/deploy_website.yml b/.github/workflows/deploy_website.yml
index 35faaf6..47a3e9d 100644
--- a/.github/workflows/deploy_website.yml
+++ b/.github/workflows/deploy_website.yml
@@ -19,6 +19,7 @@
 on:
   pull_request:
   push:
+    branches: [master]
     paths:
       - 'website/**'
 
@@ -29,7 +30,7 @@
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2
         with:
-          node-version: '14'
+          node-version: '18'
       - name: Test Build
         working-directory: ./website
         run: |
@@ -42,7 +43,7 @@
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2
         with:
-          node-version: '14'
+          node-version: '18'
       - name: Add key to allow access to repository
         env:
           SSH_AUTH_SOCK: /tmp/ssh_agent.sock
diff --git a/website/README.md b/website/README.md
index 9e2336d..db11993 100644
--- a/website/README.md
+++ b/website/README.md
@@ -23,13 +23,14 @@
 
 ## Installation
 
-```console
+```shell
+# We recommend using node 18(LTS). 
 yarn install
 ```
 
 ## Local Development
 
-```console
+```shell
 yarn start
 ```
 
@@ -37,13 +38,13 @@
 
 If you want to switch to zh-cn, you can use the following command to start.
 
-```console
+```shell
 yarn start -- --locale zh-cn
 ```
 
 ## Build
 
-```console
+```shell
 yarn build
 ```
 
@@ -51,7 +52,7 @@
 
 ## Deployment
 
-```console
+```shell
 GIT_USER=<Your GitHub username> USE_SSH=true yarn deploy
 ```