Fix import of galaxy FNLPower

Fixes the tests

Author: sbird

nbodykit/cosmology/power/__init__.py

@@ -1,5 +1,5 @@
-from .galaxy_opt import FNLGalaxyPower
+from .galaxy import FNLGalaxyPower
 from .linear import LinearPower, EHPower, NoWiggleEHPower
 from .zeldovich import ZeldovichPower
 from .halofit import HalofitPower
-from . import transfers
+from . import transfers

nbodykit/transform.py

@@ -350,7 +350,7 @@ def SkyToCartesian(ra, dec, redshift, cosmo, observer=[0, 0, 0], degrees=True, f
     degrees : bool, optional
         specifies whether ``ra`` and ``dec`` are in degrees
     frame : string ('icrs' or 'galactic')
-        speciefies which frame the Cartesian coordinates is. 
+        speciefies which frame the Cartesian coordinates is.
 
     Returns
     -------