Update README.md

Author: Maxusmusti

README.md

@@ -16,6 +16,6 @@ and responding incredibly easy to integrate into any python code.
 See full documentation [here](https://distributed-system-analysis.github.io/state-signals/)
 
 # Installation
-The state-signals PyPi package is available [here](https://pypi.org/project/state-signals)
+The state-signals PyPI package is available [here](https://pypi.org/project/state-signals)
 
 To install, run `pip install state-signals`