Commit 7db0748b7b ("kernel: modules: split package fs-fscache") modified
the KCONFIG section of KernelPackage/fs-netfs but missed to add a
backslash to escape a linebreak. Add it now.
Fixes: 7db0748b7b ("kernel: modules: split package fs-fscache")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>