You've mentioned "documentation". But "documentation" in French is feminine, therefore it is replaced by the pronoun "elle", not "il", so it's not that.
2. a page? - French "la page" is feminine, prenoun should be "elle"...
so it's not that
3. instruction? - French "instruction" is feminine, therefore "elle"
so it's not that
What else then, as the "genre" seems to be a problem for those three....
The french for handbook (as in quick reference handbook) is
manuel, which is masculine.