Update python-disk.md

Author: v-jaswel

articles/cognitive-services/Computer-vision/QuickStarts/python-disk.md

@@ -37,7 +37,7 @@ If you don't have an Azure subscription, create a [free account](https://azure.m
 To create and run the sample, do the following steps:
 
 1. Copy the following code into a text editor.
-1. Optionally, replace the value of `image_path` with the path and file name of a different image that you want to analyze.
+1. Replace the value of `image_path` with the path and file name of a different image that you want to analyze.
 1. Save the code as a file with an `.py` extension. For example, `analyze-local-image.py`.
 1. Open a command prompt window.
 1. At the prompt, use the `python` command to run the sample. For example, `python analyze-local-image.py`.
@@ -62,9 +62,11 @@ else:
 if 'COMPUTER_VISION_ENDPOINT' in os.environ:
     endpoint = os.environ['COMPUTER_VISION_ENDPOINT']
 
-analyze_url = endpoint + "vision/v2.1/analyze"
+analyze_url = endpoint + "vision/v3.0/analyze"
 
 # Set image_path to the local path of an image that you want to analyze.
+# Sample images are here, if needed:
+# https://github.com/Azure-Samples/cognitive-services-sample-data-files/tree/master/ComputerVision/Images
 image_path = "C:/Documents/ImageToAnalyze.jpg"
 
 # Read the image into a byte array