Avoid deprecated function in qhelp examples in same folder

Author: owen-mc

go/ql/src/Security/CWE-079/StoredXss.go

@@ -2,12 +2,12 @@ package main
 
 import (
 	"io"
-	"io/ioutil"
 	"net/http"
+	"os"
 )
 
 func ListFiles(w http.ResponseWriter, r *http.Request) {
-	files, _ := ioutil.ReadDir(".")
+	files, _ := os.ReadDir(".")
 
 	for _, file := range files {
 		io.WriteString(w, file.Name()+"\n")

go/ql/src/Security/CWE-079/StoredXssGood.go

@@ -3,12 +3,12 @@ package main
 import (
 	"html"
 	"io"
-	"io/ioutil"
 	"net/http"
+	"os"
 )
 
 func ListFiles1(w http.ResponseWriter, r *http.Request) {
-	files, _ := ioutil.ReadDir(".")
+	files, _ := os.ReadDir(".")
 
 	for _, file := range files {
 		io.WriteString(w, html.EscapeString(file.Name())+"\n")