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>

export.py

@@ -1,6 +1,6 @@
 # Ultralytics YOLOv5 🚀, AGPL-3.0 license
 """
-Export a YOLOv5 PyTorch model to other formats. TensorFlow exports authored by https://github.com/zldrobit
+Export a YOLOv5 PyTorch model to other formats. TensorFlow exports authored by https://github.com/zldrobit.
 
 Format                      | `export.py --include`         | Model
 ---                         | ---                           | ---
@@ -141,7 +141,7 @@ class iOSModel(torch.nn.Module):
 
 
 def export_formats():
-    """
+    r"""
     Returns a DataFrame of supported YOLOv5 model export formats and their properties.
 
     Returns: