Slight changes in documentation according to suggestions.

(Redmine issue: #6127)

doc/sphinx/_doclib/reporting.rst

@@ -246,7 +246,7 @@ to following steps:
 #. Tag event with new class using the :ref:`mentat-inspector.py <section-bin-mentat-inspector>`
    module. This means, that in default installation you have to edit configuration
    file ``/etc/mentat/mentat-inspector.py.conf`` and append new rule into the list
-   of existing ``inspection_rules``.
+   of existing ``inspection_rules``. Restart inspector.
 #. Create subdirectory in ``/etc/mentat/event_classes/`` with same name as rule
    and in it create files ``info.json``, ``email.j2``, ``hawat.j2``.
 #. To ``info.json`` paste json object with ``label`` key that contains short description
@@ -268,10 +268,12 @@ to following steps:
 Following steps are required if you are using internationalization and are
 also required if you are adding new language:
 
-#. If you are adding classes in git repository, change working directory to its root,
-   or if you are adding in installed instance, change directory to folder with
-   your hawat installation. If you changed default installation paths, you also
-   need to change them in Makefile.
+#. If you are adding classes in git repository, change working directory to its root.
+   If you are adding in installed instance, activate venv by running
+   ``. /var/mentat/venv/bin/activate`` and change directory to folder with your hawat
+   installation. You can locate it by running ``python3 -c "import hawat; import os.path;
+   print(os.path.dirname(hawat.__file__))"``. If you changed default installation paths,
+   you also need to change them in Makefile.
 #. Run ``make cpybabel-init INIT_LOCALE=lc`` where lc is code of your locales.
 #. Add translations to ``<git_root>/conf/event_classes/<class_name>/translations/<lc>/LC_MESSAGES/messages.po``
    or ``/etc/mentat/event_classes/<class_name>/translations/<lc>/LC_MESSAGES/messages.po``.