hugo/docs/content/en/functions/strings/Title.md

title	linkTitle	description	categories	keywords	menu	function	relatedFunctions	aliases
strings.Title	title	Converts the provided string to title case.	functions		docs parent functions	aliases returnType signatures title string strings.Title STRING	strings.FirstUpper strings.Title strings.ToLower strings.ToUpper	/functions/title

{{ title "table of contents (TOC)" }} → "Table of Contents (TOC)"

By default, Hugo adheres to the capitalization rules in the Associated Press (AP) Stylebook. Change your site configuration if you would prefer to follow the Chicago Manual of Style, or to use Go's convention of capitalizing every word.