Update HowToDefineGeometricShape.rst

Code/Mantid/docs/source/concepts/HowToDefineGeometricShape.rst

@@ -31,11 +31,11 @@ algebra that follows the following notation:
 +------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------+------------------------------------------------------------------------------------------------------+
 | Operator   | Description                                                                                                                                                    | Example                                                                                              |
 +============+================================================================================================================================================================+======================================================================================================+
-|            | Union (i.e two or more things making up one shape). See e.g. also `1 <http://en.wikipedia.org/wiki/Union_(set_theory)>`__                                      | a body = legs : torso : arms : head                                                                  |
+| :          | Union (i.e two or more things making up one shape). See e.g. also `1 <http://en.wikipedia.org/wiki/Union_(set_theory)>`__                                      | a body = legs : torso : arms : head                                                                  |
 +------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------+------------------------------------------------------------------------------------------------------+
 | " "        | "space" shared between shapes, i,e. intersection (the common region of shapes). See e.g. also `2 <http://en.wikipedia.org/wiki/Intersection_(set_theory)>`__   | "small-circle = big-circle small-circle" (where the small circle placed within the big-circle)       |
 +------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------+------------------------------------------------------------------------------------------------------+
-| #.         | Complement                                                                                                                                                     | #. sphere = shape defined by all points outside sphere                                               |
+| \#         | Complement                                                                                                                                                     | \# sphere = shape defined by all points outside sphere                                               |
 +------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------+------------------------------------------------------------------------------------------------------+
 | ( )        | Brackets are used to emphasise which shapes an operation should be applied to.                                                                                 | box1 (# box2) is the intersection between box1 and the shape defined by all points not inside box2   |
 +------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------+------------------------------------------------------------------------------------------------------+