Add type hints to Image component documentation (#1229)

If the source of the image is from the PIL package, the type hint must be "Image.Image". It is easy to mistake it for simply "Image" which results in the following error: TypeError: Unsupported type <module 'PIL.Image'>. This simple type hint on the documentation resolves any confusion.

Author: akincan-kilic

docs/library/media/image.md

@@ -41,8 +41,8 @@ import requests
 
 
 class ImageState(rx.State):
-    url = f"https://picsum.photos/id/1/200/300"
-    image = Image.open(requests.get(url, stream=True).raw)
+    url: str = f"https://picsum.photos/id/1/200/300"
+    image: Image.Image = Image.open(requests.get(url, stream=True).raw)
 
 
 def image_pil_example():
@@ -59,4 +59,4 @@ A cv2 image must be converted to a PIL image to be passed directly to `rx.image`
 ```md alert info
 # How to let your user upload an image
 To let a user upload an image to your app check out the [upload docs]({library.forms.upload.path}).
-```
+```