all: fix some comments

Change-Id: I1ae88db264cb5fb513773241ec2a8e7694c8c6e5
Reviewed-on: https://go-review.googlesource.com/c/text/+/480175
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>

collate/maketables.go

@@ -286,7 +286,7 @@ var tagRe = regexp.MustCompile(`<([a-z_]*)  */>`)
 
 var mainLocales = []string{}
 
-// charsets holds a list of exemplar characters per category.
+// charSets holds a list of exemplar characters per category.
 type charSets map[string][]string
 
 func (p charSets) fprint(w io.Writer) {

internal/cldrtree/option.go

@@ -36,7 +36,7 @@ func (o *options) setAlias(n Element) {
 	}
 }
 
-// Enum defines a enumeration type. The resulting option may be passed for the
+// Enum defines an enumeration type. The resulting option may be passed for the
 // construction of multiple Indexes, which they will share the same enum values.
 // Calling Gen on a Builder will generate the Enum for the given name. The
 // optional values fix the values for the given identifier to the argument

language/httpexample_test.go

@@ -19,7 +19,7 @@ var matcher = language.NewMatcher([]language.Tag{
 	language.German,
 })
 
-// handler is a http.HandlerFunc.
+// handler is an http.HandlerFunc.
 func handler(w http.ResponseWriter, r *http.Request) {
 	t, q, err := language.ParseAcceptLanguage(r.Header.Get("Accept-Language"))
 	// We ignore the error: the default language will be selected for t == nil.