Minor punctuation correction

Author: pauljurczak

cadquery/cq.py

@@ -546,14 +546,14 @@ def workplane(
              face(s) or vertex (vertices). 'ProjectedOrigin' uses by default the current origin
              or the optional origin parameter (if specified) and projects it onto the plane
              defined by the selected face(s).
-           * The Z direction will be the normal of the face,computed
+           * The Z direction will be the normal of the face, computed
              at the center point.
            * The X direction will be parallel to the x-y plane. If the workplane is  parallel to
              the global x-y plane, the x direction of the workplane will co-incide with the
              global x direction.
 
         Most commonly, the selected face will be planar, and the workplane lies in the same plane
-        of the face ( IE, offset=0).  Occasionally, it is useful to define a face offset from
+        of the face ( IE, offset=0). Occasionally, it is useful to define a face offset from
         an existing surface, and even more rarely to define a workplane based on a face that is
         not planar.
         """