Update README.md

SaadBazaz · web-flow · commit db77252f97d1 · 2021-12-06T21:13:21.000+05:00
diff --git a/README.md b/README.md
@@ -12,7 +12,7 @@ Programming Language in Urdu, based on Python - اردو میں کوڈ لکھی
 ### Pip
 If you've installed ```pip```, you can download UrduPython from [Test PyPI](https://test.pypi.org/project/urdupython/) using the following command:
 ```
-pip install -i https://test.pypi.org/simple/ urdupython
+pip install -i https://test.pypi.org/simple/  --extra-index-url https://pypi.org/simple urdupython
 ```
 
 ### Source
@@ -94,4 +94,4 @@ Download and install Notepad++. Right click and activate RTL (Right-to-left).
 ## Tests
 ### Platform(s) tested on
 macOS Big Sur 11.1
-Termux (Android)
+Termux (Android)
