hugolib: Add capitalizeListTitles config option

Whether to capitalize automatic page titles, applicable to section,
taxonomy, and term pages. Default is true.

Closes #9793
Closes #12115

config/allconfig/allconfig.go

@@ -538,6 +538,9 @@ type RootConfig struct {
 	// Note that this currently only works for English, but you can provide your own title in the content file's front matter.
 	PluralizeListTitles bool
 
+	// Whether to capitalize automatic page titles, applicable to section, taxonomy, and term pages.
+	CapitalizeListTitles bool
+
 	// Make all relative URLs absolute using the baseURL.
 	// <docsmeta>{"identifiers": ["baseURL"] }</docsmeta>
 	CanonifyURLs bool

config/allconfig/load.go

@@ -189,6 +189,7 @@ func (l configLoader) applyDefaultConfig() error {
 		"menus":                                maps.Params{},
 		"disableLiveReload":                    false,
 		"pluralizeListTitles":                  true,
+		"CapitalizeListTitles":                 true,
 		"forceSyncStatic":                      false,
 		"footnoteAnchorPrefix":                 "",
 		"footnoteReturnLinkContents":           "",