Update README.md (#13283)

* Update README.md

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

* Auto-format by https://ultralytics.com/actions

---------

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Co-authored-by: UltralyticsAssistant <web@ultralytics.com>

utils/loggers/__init__.py

@@ -349,7 +349,7 @@ class Loggers:
 class GenericLogger:
     """
     YOLOv5 General purpose logger for non-task specific logging
-    Usage: from utils.loggers import GenericLogger; logger = GenericLogger(...)
+    Usage: from utils.loggers import GenericLogger; logger = GenericLogger(...).
 
     Arguments:
         opt:             Run arguments