all: fix typos in comments (#21118)

p2p/dnsdisc/client.go

@@ -251,7 +251,7 @@ func (it *randomIterator) Next() bool {
 	return it.cur != nil
 }
 
-// addTree adds a enrtree:// URL to the iterator.
+// addTree adds an enrtree:// URL to the iterator.
 func (it *randomIterator) addTree(url string) error {
 	le, err := parseLink(url)
 	if err != nil {

p2p/rlpx_test.go

@@ -55,7 +55,7 @@ func TestSharedSecret(t *testing.T) {
 	}
 	t.Logf("Secret:\n%v %x\n%v %x", len(ss0), ss0, len(ss0), ss1)
 	if !bytes.Equal(ss0, ss1) {
-		t.Errorf("dont match :(")
+		t.Errorf("don't match :(")
 	}
 }
 

p2p/simulations/http.go

@@ -698,7 +698,7 @@ func (s *Server) JSON(w http.ResponseWriter, status int, data interface{}) {
 	json.NewEncoder(w).Encode(data)
 }
 
-// wrapHandler returns a httprouter.Handle which wraps a http.HandlerFunc by
+// wrapHandler returns an httprouter.Handle which wraps an http.HandlerFunc by
 // populating request.Context with any objects from the URL params
 func (s *Server) wrapHandler(handler http.HandlerFunc) httprouter.Handle {
 	return func(w http.ResponseWriter, req *http.Request, params httprouter.Params) {