Update README

Signed-off-by: shiyu22 <shiyu.chen@zilliz.com>

README.md

@@ -1,6 +1,6 @@
 # Image Preprocessing Operator
 
-Authors: derekdqc, shiyu22
+Authors: derekdqc
 
 ## Overview
 
@@ -28,7 +28,7 @@ __call__(self, img: Union[Image.Image, torch.Tensor, str])
 
 - img:
   - the input image to be processed
-  - supported type: ` PIL.image` or `str` (path of the image)
+  - supported type: `PIL.image` or `str` (path of the image)
 
 **Returns:**