chore: fix warnings (#3989)

core/iox/pipe.go

@@ -2,7 +2,7 @@ package iox
 
 import "os"
 
-// RedirectInOut redirects stdin to r, stdout to w, and callers need to call restore afterwards.
+// RedirectInOut redirects stdin to r, stdout to w, and callers need to call restore afterward.
 func RedirectInOut() (restore func(), err error) {
 	var r, w *os.File
 	r, w, err = os.Pipe()

core/iox/textfile.go

@@ -9,7 +9,7 @@ import (
 
 const bufSize = 32 * 1024
 
-// CountLines returns the number of lines in file.
+// CountLines returns the number of lines in the file.
 func CountLines(file string) (int, error) {
 	f, err := os.Open(file)
 	if err != nil {

core/iox/textlinescanner.go

@@ -6,7 +6,7 @@ import (
 	"strings"
 )
 
-// A TextLineScanner is a scanner that can scan lines from given reader.
+// A TextLineScanner is a scanner that can scan lines from the given reader.
 type TextLineScanner struct {
 	reader  *bufio.Reader
 	hasNext bool
@@ -14,7 +14,7 @@ type TextLineScanner struct {
 	err     error
 }
 
-// NewTextLineScanner returns a TextLineScanner with given reader.
+// NewTextLineScanner returns a TextLineScanner with the given reader.
 func NewTextLineScanner(reader io.Reader) *TextLineScanner {
 	return &TextLineScanner{
 		reader:  bufio.NewReader(reader),