In calibre recipe is basically a set of instructions that telll calibre how to download news from a given RSS feed/website. It is like a cooking recipe (which is a set of instructions on how to prepare a dish). So I would recommend translating it as 'recipe' in french, if possible or if not as 'set of instructions'
Notice to all: I can not
provide assistance with DRM removal, for legal reasons, so please do not contact me about it.