docs: fix search, redirects and broken links (#6940)

Author: nflaig

CONTRIBUTING.md

@@ -50,7 +50,7 @@ Contributing to tests:
 
 ## Devcontainer
 
-A [devcontainer](https://containers.dev/) [configuration](.devcontainer/devcontainer.json) is provided to help speed up linux based development environment setup. It will be used by [GitHub Codespaces](https://github.com/features/codespaces) or directly inside VS Code via your local through this [extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers).
+A [devcontainer](https://containers.dev/) [configuration](https://github.com/ChainSafe/lodestar/blob/unstable/.devcontainer/devcontainer.json) is provided to help speed up linux based development environment setup. It will be used by [GitHub Codespaces](https://github.com/features/codespaces) or directly inside VS Code via your local through this [extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers).
 
 ### Common Issues
 

docs/package.json

@@ -14,10 +14,10 @@
     "write-heading-ids": "docusaurus write-heading-ids"
   },
   "dependencies": {
-    "@docusaurus/core": "^3.4.0",
-    "@docusaurus/plugin-client-redirects": "^3.4.0",
-    "@docusaurus/preset-classic": "^3.4.0",
-    "@docusaurus/theme-mermaid": "^3.4.0",
+    "@docusaurus/core": "3.2.0",
+    "@docusaurus/plugin-client-redirects": "3.2.0",
+    "@docusaurus/preset-classic": "3.2.0",
+    "@docusaurus/theme-mermaid": "3.2.0",
     "@easyops-cn/docusaurus-search-local": "^0.40.1",
     "@mdx-js/react": "^3.0.0",
     "clsx": "^2.0.0",
@@ -26,8 +26,8 @@
     "react-dom": "^18.0.0"
   },
   "devDependencies": {
-    "@docusaurus/module-type-aliases": "^3.4.0",
-    "@docusaurus/types": "^3.4.0"
+    "@docusaurus/module-type-aliases": "3.2.0",
+    "@docusaurus/types": "3.2.0"
   },
   "browserslist": {
     "production": [

docs/sidebars.ts

@@ -69,6 +69,11 @@ const sidebars: SidebarsConfig = {
       label: "Contributing",
       collapsed: false,
       items: [
+        {
+          type: "doc",
+          label: "Getting Started",
+          id: "contribution/getting-started",
+        },
         {
           type: "category",
           label: "Advanced Topics",