[EN] Fix "en-langs" script

[BoboTiG]

Traceback (most recent call last):
  File "scripts/en-langs.py", line 89, in <module>
    mres: dict[str, dict[str, str]] = read_all_lines_etym(lines)
                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "scripts/en-langs.py", line 56, in read_all_lines_etym
    exec(concat, globals())
  File "<string>", line 3173, in <module>
NameError: name 'Q4106789' is not defined

[lasconic]

The last changes on the page are incorrect. I sent a message to the editor. https://en.wiktionary.org/wiki/User_talk:Vininn126#Changes_in_etymology_language_data