tpl/internal: Sync go_templates

Closes #10411

tpl/internal/go_templates/texttemplate/option.go

@@ -30,6 +30,7 @@ type option struct {
 //
 // missingkey: Control the behavior during execution if a map is
 // indexed with a key that is not present in the map.
+//
 //	"missingkey=default" or "missingkey=invalid"
 //		The default behavior: Do nothing and continue execution.
 //		If printed, the result of the index operation is the string
@@ -38,7 +39,6 @@ type option struct {
 //		The operation returns the zero value for the map type's element.
 //	"missingkey=error"
 //		Execution stops immediately with an error.
-//
 func (t *Template) Option(opt ...string) *Template {
 	t.init()
 	for _, s := range opt {