tests/runTestSuite: typos and minor cleanups

product/ERP5Type/tests/runTestSuite.py

-#!/usr/bin/env python2.7
 from __future__ import absolute_import
 from __future__ import print_function
 import argparse, sys, os, textwrap
@@ -55,10 +54,11 @@ def main():
         Running a full test suite on a development machine can be achieved with:
 
           %(prog)s --node_quantity=3 --test_suite=ERP5 --xvfb_bin=/path/to/Xvfb --firefox_bin=/path/to/firefox
+
       '''))
 
   # Parameters included in wrappers generated by SlapOS ERP5 software release.
-  # To handle backward compatibity, we prefer that the generated wrapper pass
+  # To handle backward compatibility, we prefer that the generated wrapper pass
   # these parameters as environment variables. This way, if SlapOS SR is more
   # recent, the parameter will be ignored by ERP5.
   slapos_wrapper_group = parser.add_argument_group(
@@ -76,12 +76,12 @@ def main():
   slapos_wrapper_group.add_argument('--bt5_path', default=None)
   slapos_wrapper_group.add_argument(
       '--zserver_address_list',
-      help='A list of comma seperated host:port for ZServer.\n'
+      help='A list of comma separated host:port for ZServer.\n'
       'Also taken from zserver_address_list environment variable.',
       default=os.getenv('zserver_address_list', ''))
   slapos_wrapper_group.add_argument(
       '--zserver_frontend_url_list',
-      help='A list of comma seperated frontend URLs, one for each of zserver_address_list,'
+      help='A list of comma separated frontend URLs, one for each of zserver_address_list,'
       'in the same order.\nAlso taken from zserver_frontend_url_list environment variable',
       default=os.getenv('zserver_frontend_url_list', ''))