doc: add geometry.py to docs, fix rst issues....

doc/autobuild.py

@@ -37,6 +37,7 @@ import kivy.core.text.markup
 import kivy.core.video
 import kivy.core.window
 import kivy.ext
+import kivy.geometry
 import kivy.graphics
 import kivy.graphics.shader
 import kivy.animation

kivy/geometry.py

@@ -54,7 +54,8 @@ def minimum_bounding_circle(points):
 
     For a description of the problem being solved, see:
         http://en.wikipedia.org/wiki/Smallest_circle_problem
-    The function uses Applet's Algorithm, the runtime is O(h^3 *n),
+
+    The function uses Applet's Algorithm, the runtime is O\(h^3, \*n\),
     where h is the number of points in the convex hull of the set of points.
     **But** it runs in linear time in almost all real world cases.
     See: http://tinyurl.com/6e4n5yb