Test - Search Results - Add emojis for better section identification

[VaclavElias]

See the screenshot below. The emojis in the Stride web search results easily suggest where the content is coming from, while the Stride Docs search result doesn't make you accessing the section visually faster. You have to read to figure out what is API or Tutorial or Manual.

Update docfx.json with emojis and test the results.

Searching for Entity: