Hello,
I received a message on my talk page about a cosmetic change :
https://fr.wikipedia.org/wiki/Discussion_utilisateur:HerculeBot#br_vs_br_.2F
The user explains me that in the HTML5 standard, the BR tag is <br> and that <br /> is only accepted, not recommanded.
As I use pywikipedia with no customisation I let the developpers change this cosmetic fix.
Regards
Hercule