Convert snippet references from old [!code-lang[...]] syntax to new :::code syntax#11759

Copilot wants to merge 2 commits intomaindotnet/dotnet-api-docs:mainfrom

copilot/fix-ccaa149b-91bd-4a3a-b681-a7d38d8d4a10dotnet/dotnet-api-docs:copilot/fix-ccaa149b-91bd-4a3a-b681-a7d38d8d4a10Copy head branch name to clipboard