Fix wrong variable name
Fix wrong variable name

> The variable $requirement does not exist.

X-dark/wallabag,pmichelazzo/wallabag,X-dark/wallabag,shtrom/wallabag,FabienM/wallabag,wallabag/wallabag,egilli/wallabag,X-dark/wallabag,FabienM/wallabag,pmichelazzo/wallabag,egilli/wallabag,pmichelazzo/wallabag,shtrom/wallabag,FabienM/wallabag,egilli/wallabag,egilli/wallabag,X-dark/wallabag,pmichelazzo/wallabag,shtrom/wallabag,shtrom/wallabag,egilli/wallabag,wallabag/wallabag,shtrom/wallabag,FabienM/wallabag,pmichelazzo/wallabag,X-dark/wallabag,wallabag/wallabag