docs: fix broken links (#3540)

# What does this PR do?

<!-- Provide a short summary of what this PR does and why. Link to relevant issues if applicable. -->

<!-- If resolving an issue, uncomment and update the line below -->

<!-- Closes #[issue-number] -->

- Fixes broken links and Docusaurus search

Closes #3518

## Test Plan

The following should produce a clean build with no warnings and search enabled:

```
npm install
npm run gen-api-docs all
npm run build
npm run serve
```

<!-- Describe the tests you ran to verify your changes with result summaries. *Provide clear instructions so the plan can be easily re-executed.* -->

docs/docusaurus.config.ts

@@ -217,11 +217,6 @@ const config: Config = {
         ignoreFiles: [
           "node_modules/**/*",
         ],
-
-        // Exclude OpenAPI generated docs from search to avoid duplicates
-        searchContextByPaths: [
-          "docs",
-        ],
       },
     ],
   ],