fix docs

doc/source/user_guide/ug_implementation.rst

@@ -152,11 +152,11 @@ read from a netcdf grid file. The kmt (mask) netcdf file needs a variable named
 kmt or mask, set to 0 for land and 1 for ocean.
 
 For the *mom_mosaic* formats (``grid_type='mom_mosaic'``), a grid file following
-the MOM mosaic (supergrid) convention as generated by `FRE-NCTools <https://github.com/NOAA-GFDL/FRE-NCtools>`_
- and described in `this short summary <https://gist.github.com/adcroft/c1e207024fe1189b43dddc5f1fe7dd6c>`_ 
+the MOM mosaic (supergrid) convention as generated by `FRE-NCTools <https://github.com/NOAA-GFDL/FRE-NCtools>`_ 
+and described in `this short summary <https://gist.github.com/adcroft/c1e207024fe1189b43dddc5f1fe7dd6c>`_ 
 is required. CICE derives the required grid variables to match the grid implementation 
 in MOM6. All lat/lon and grid lengths are read from the file. Cell areas for A & B grid 
-cells are loaded from the file, and grid lengths for C grid cells are calculated internally.
+cells are loaded from the file, and cell areas for C grid cells are calculated internally.
 Rotation angles for cells are also calculated interally. All calculations match the methods
 used in MOM6 for consistency.