Sphinx build fix (#229)
Sphinx build fix (#229)

This was missed in #203, where uses of absolute CMAKE_BINARY_DIR were
changed to PROJECT_BINARY_DIR.
googlecartographer/cartographer,larics/cartographer,larics/cartographer,cartographer-project/cartographer,wohe/cartographer,googlecartographer/cartographer,cartographer-project/cartographer,googlecartographer/cartographer,damonkohler/cartographer,damonkohler/cartographer,wohe/cartographer,wohe/cartographer,damonkohler/cartographer,cartographer-project/cartographer,larics/cartographer,wohe/cartographer,googlecartographer/cartographer,larics/cartographer,damonkohler/cartographer,cartographer-project/cartographer