path: use the correct name in validateString

The parameter was renamed from `ext` to `suffix`
but not in the `validateString` call.
PR-URL: #53669
Reviewed-By: Moshe Atlow <moshe@atlow.co.il>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Deokjin Kim <deokjin81.kim@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: bpasero

lib/path.js

@@ -775,7 +775,7 @@ const win32 = {
  */
 basename(path,suffix){
 if(suffix!==undefined)
-validateString(suffix,'ext');
+validateString(suffix,'suffix');
 validateString(path,'path');
 letstart=0;
 letend=-1;
@@ -1335,7 +1335,7 @@ const posix = {
  */
 basename(path,suffix){
 if(suffix!==undefined)
-validateString(suffix,'ext');
+validateString(suffix,'suffix');
 validateString(path,'path');
 
 letstart=0;