Update contribution guide with Windows virtual environment setup (#1590)

Co-authored-by: Abdulaziz Aloqeely <[email protected]>

CONTRIBUTING.md

@@ -26,10 +26,21 @@ cd albumentations
 
 We recommend using a virtual environment to isolate project dependencies. Ensure you have Python 3.8 or higher installed on your machine, as it is the minimum supported version for Albumentations. To create and activate a virtual environment, run the following commands:
 
+#### Linux / macOS
 ```bash
 python3 -m venv env
 source env/bin/activate
 ```
+#### Windows cmd.exe
+```bash
+python -m venv env
+env\Scripts\activate.bat
+```
+#### Windows PowerShell
+```bash
+python -m venv env
+env\Scripts\activate.ps1
+```
 
 #### Install development dependencies