[DOC]: Improve examples section

### 🔗 Affected page or URL

https://fluent.docs.pyansys.com/version/dev/examples/index.html

### ⚠️ What is wrong or missing?

The entire examples section is rendering a bit patchy with mix of sentence cases and camel case, etc. The outline is not rendering properly and not linking correctly in some cases. Have an overall look and improve this section.

### ✏️ Suggested improvement

_No response_

### 📌 Additional context

_No response_

Open the affected examples page at https://fluent.docs.pyansys.com/version/dev/examples/index.html and inspect its headings, sentence and camel case usage, outline, and links. Review the documentation source that generates this section, then confirm the examples render consistently and the outline and links work correctly.

Written by the indexing model from the issue text.