Update syntax of version number reading function.

docs/source/conf.py

@@ -68,9 +68,7 @@ author = 'Craig Warren and Antonis Giannopoulos'
 #
 # The short X.Y version.
 # Read version number from gprMax/gprMax.py
-version = re.search('^__version__\s*=\s*\'(.*)\'',
-                    open('../../gprMax/gprMax.py').read(),
-                    re.M).group(1)
+version = re.search('^__version__\s*=\s*\'(.*)\'', open('../../gprMax/gprMax.py').read(), re.M).group(1)
 # The full version, including alpha/beta/rc tags.
 release = version + '(Bowmore)'