Concerning the style remark you gave in the edit summary, note that the most important style direction is to keep the balance between form and the stylistic context in which the phrase belongs ("Odpowiednie dać rzeczy słowo"). The stylistic guideline you refer to is again the rule used for essays not for informative texts. In particular, the stylistic guideline is to much descent not obeyed in Polish technical texts where it is more important to refer to precisely defined notions than to present rich vocabulary. Even in the world of essay texts the word "język" in conjunction with an adjunct after the word (which indicates that this is a separate notion and which usage is the subject of our argument) is very often used as repetition. You can consult for instance Korpus Języka Polskiego Wydawnictwa Naukowego PWN to see many cases of the usage which does not obey the non-repetition style rule: , , , , , , , , , , . Again, I don't deny that the style guideline you mentioned does not exist. I only state that in the context of the template this rule does not apply.