Update Docusaurus configuration and dependencies

.github/workflows/deploy.yml

@@ -26,7 +26,7 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 20.18.1
           cache: npm
 
       - name: Install dependencies

.github/workflows/link-verification.yml

@@ -18,7 +18,7 @@ jobs:
     - name: Setup Node.js
       uses: actions/setup-node@v4
       with:
-        node-version: '18'
+        node-version: 20.18.1
         cache: 'npm'
 
     - name: Install dependencies

.github/workflows/test-deploy.yml

@@ -16,7 +16,7 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 20.18.1
           cache: npm
 
       - name: Install dependencies

docusaurus.config.js

@@ -42,7 +42,6 @@ const config = {
 
   trailingSlash: false,
   onBrokenLinks: "warn",
-  onBrokenMarkdownLinks: "warn",
 
   // Even if you don't use internationalization, you can use this field to set
   // useful metadata like html lang. For example, if your site is Chinese, you
@@ -113,7 +112,12 @@ const config = {
     // Add any other plugins you need
   ],
 
-  markdown: { mermaid: true },
+  markdown: { 
+    mermaid: true,
+    hooks: {
+      onBrokenMarkdownLinks: "warn"
+    }
+  },
   themes: ["@docusaurus/theme-mermaid"],
 
   themeConfig: