Refs #703 Updated error string.

git-svn-id: http://dev.piwik.org/svn/trunk@6170 59fd770c-687e-43c8-a1e3-f5a4ff64c105

misc/log-analytics/import_logs.py

@@ -1080,8 +1080,8 @@ class Parser(object):
                 format_name = self.detect_format(line)
                 if not format_name:
                     return fatal_error(
-                        'Cannot guess the logs format. Please give one using'
-                        ' the --format option'
+                        'Cannot guess the logs format. Please give one using '
+                        'either the --log-format-name or --log-format-regex option'
                     )
                 format = FORMATS[format_name]
                 config.format = format