Update go dependencies

vendor/golang.org/x/text/language/coverage.go

@@ -80,7 +80,7 @@ func (s allSubtags) Tags() []Tag {
 	return nil
 }
 
-// coverage is used used by NewCoverage which is used as a convenient way for
+// coverage is used by NewCoverage which is used as a convenient way for
 // creating Coverage implementations for partially defined data. Very often a
 // package will only need to define a subset of slices. coverage provides a
 // convenient way to do this. Moreover, packages using NewCoverage, instead of

vendor/golang.org/x/text/language/language.go

@@ -335,6 +335,11 @@ func (t Tag) Variants() []Variant {
 // Parent returns the CLDR parent of t. In CLDR, missing fields in data for a
 // specific language are substituted with fields from the parent language.
 // The parent for a language may change for newer versions of CLDR.
+//
+// Parent returns a tag for a less specific language that is mutually
+// intelligible or Und if there is no such language. This may not be the same as
+// simply stripping the last BCP 47 subtag. For instance, the parent of "zh-TW"
+// is "zh-Hant", and the parent of "zh-Hant" is "und".
 func (t Tag) Parent() Tag {
 	return Tag(compact.Tag(t).Parent())
 }

vendor/golang.org/x/text/language/parse.go

@@ -41,7 +41,7 @@ func Parse(s string) (t Tag, err error) {
 // value. All other values are preserved. It accepts tags in the BCP 47 format
 // and extensions to this standard defined in
 // https://www.unicode.org/reports/tr35/#Unicode_Language_and_Locale_Identifiers.
-// The resulting tag is canonicalized using the the canonicalization type c.
+// The resulting tag is canonicalized using the canonicalization type c.
 func (c CanonType) Parse(s string) (t Tag, err error) {
 	tt, err := language.Parse(s)
 	if err != nil {
@@ -199,7 +199,7 @@ func split(s string, c byte) (head, tail string) {
 	return strings.TrimSpace(s), ""
 }
 
-// Add hack mapping to deal with a small number of cases that that occur
+// Add hack mapping to deal with a small number of cases that occur
 // in Accept-Language (with reasonable frequency).
 var acceptFallback = map[string]language.Language{
 	"english": _en,