Update README.md

Author: NEEHITGOYAL

Python/shape-detection/README.md

@@ -5,7 +5,7 @@ A Python Script to detect shapes,shapes area, color,centroid from images.
 ## How to execute this Script
 
 + Run `pip install opencv-python` to install the required packages.
-+ Add the image to same folder with the name img.png
++ Add the image to same folder with the name **img.png**
 + Run the script using `python3 Shape_Detection.py`
 + The script will printout shapes area color centroid