doc: update online documentation version number

Signed-off-by: Jingru <[email protected]>

Author: wangnuannuan

doc/documents/conf.py

@@ -68,9 +68,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = u'2018.12'
+version = u'2019.06'
 # The full version, including alpha/beta/rc tags.
-release = u'2018.12'
+release = u'2019.06'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.