correct rst syntax for code blocks

jenshnielsen · jenshnielsen · commit eb4e8383562b · 2015-03-23T09:39:38.000Z
diff --git a/doc/devel/color_changes.rst b/doc/devel/color_changes.rst
@@ -74,6 +74,7 @@ above, only with a more limited luminence variation.
 Example script
 ++++++++++++++
 ::
+
    import numpy as np
    import matplotlib.pyplot as plt
 
@@ -112,6 +113,7 @@ ordering.
 Example script
 ++++++++++++++
 ::
+
    import numpy as np
    import matplotlib.pyplot as plt
 
