[DOC] Fix details of tox
We need put a space between a param's name and a param's value in tox
and it would be more clear.
eg: from `tox -epy35` to `tox -e py35`.
Change-Id: I86750f42669bb02dcfac2b62e294d557bf44bd4c
diff --git a/HACKING.rst b/HACKING.rst
index f97f97a..c0a857c 100644
--- a/HACKING.rst
+++ b/HACKING.rst
@@ -246,7 +246,7 @@
to the config variables in tempest/config.py then the sample config file must be
regenerated. This can be done running::
- tox -egenconfig
+ tox -e genconfig
Unit Tests
----------