Fixes typo in get_url (#57305)

Fixes Typo, need instead of ned

lib/ansible/modules/net_tools/basics/get_url.py

@@ -222,7 +222,7 @@ EXAMPLES = r'''
     dest: /tmp/afilecopy.txt
 
 - name: < Fetch file that requires authentication.
-        username/password only availabe since 2.8, in older versions you ned to use url_username/url_password
+        username/password only availabe since 2.8, in older versions you need to use url_username/url_password
   get_url:
     url: http://example.com/path/file.conf
     dest: /etc/foo.conf