Re-format some comments

This is the result of running `go fmt -mod=readonly ./...`

git/gitconfig.go

@@ -90,10 +90,10 @@ func (config *Config) FullKey(key string) string {
 // a component boundary (i.e., at a '.'). If yes, it returns `true`
 // and the part of the key after the prefix; e.g.:
 //
-//     configKeyMatchesPrefix("foo.bar", "foo") → true, "bar"
-//     configKeyMatchesPrefix("foo.bar", "foo.") → true, "bar"
-//     configKeyMatchesPrefix("foo.bar", "foo.bar") → true, ""
-//     configKeyMatchesPrefix("foo.bar", "foo.bar.") → false, ""
+//	configKeyMatchesPrefix("foo.bar", "foo") → true, "bar"
+//	configKeyMatchesPrefix("foo.bar", "foo.") → true, "bar"
+//	configKeyMatchesPrefix("foo.bar", "foo.bar") → true, ""
+//	configKeyMatchesPrefix("foo.bar", "foo.bar.") → false, ""
 func configKeyMatchesPrefix(key, prefix string) (bool, string) {
 	if prefix == "" {
 		return true, key

git/reference.go

@@ -27,7 +27,7 @@ type Reference struct {
 // `Reference`. It is assumed that `line` is formatted like the output
 // of
 //
-//     git for-each-ref --format='%(objectname) %(objecttype) %(objectsize) %(refname)'
+//	git for-each-ref --format='%(objectname) %(objecttype) %(objectsize) %(refname)'
 func ParseReference(line string) (Reference, error) {
 	words := strings.Split(line, " ")
 	if len(words) != 4 {

internal/refopts/filter_value.go

@@ -76,9 +76,9 @@ func (v *filterValue) Set(s string) error {
 //
 // * If it is bracketed with `/` characters, treat it as a regexp.
 //
-// * If it starts with `@`, then consider it a refgroup name. That
-//   refgroup must already be defined. Use its filter. This construct
-//   is only allowed at the top level.
+//   - If it starts with `@`, then consider it a refgroup name. That
+//     refgroup must already be defined. Use its filter. This construct
+//     is only allowed at the top level.
 //
 // * Otherwise treat it as a prefix.
 func (v *filterValue) interpretFlexibly(s string) (git.ReferenceFilter, error) {

sizes/output.go

@@ -279,10 +279,10 @@ func (t *Threshold) Type() string {
 // A `pflag.Value` that can be used as a boolean option that sets a
 // `Threshold` variable to a fixed value. For example,
 //
-//		pflag.Var(
-//			sizes.NewThresholdFlagValue(&threshold, 30),
-//			"critical", "only report critical statistics",
-//		)
+//	pflag.Var(
+//		sizes.NewThresholdFlagValue(&threshold, 30),
+//		"critical", "only report critical statistics",
+//	)
 //
 // adds a `--critical` flag that sets `threshold` to 30.
 type thresholdFlagValue struct {