[docs] Fixed versions in sphinx config file

docs/source/conf.py

@@ -15,7 +15,7 @@
 import sys
 import os
 import shlex
-import netjsonconfig
+from netjsonconfig.version import VERSION, get_version
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
@@ -59,9 +59,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = str(netjsonconfig.VERSION[0])
+version = '{0}.{1}'.format(VERSION[0], VERSION[1])
 # The full version, including alpha/beta/rc tags.
-release = str(netjsonconfig.VERSION[1])
+release = get_version()
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.