update: README.md

Author: f-allian

README.md

@@ -55,7 +55,7 @@ pip install -e . # For editable install, useful for development work
 For more information on how to use the Causal Testing Framework, please refer to our [documentation](https://causal-testing-framework.readthedocs.io/en/latest/?badge=latest).  
 
 >[!NOTE]
->We recommend you use a 64 bit OS (standard in most modern machines) as we have had reports of the installation crashing on some 32 bit Debian installations.
+>We recommend that you use a 64 bit OS (standard in most modern machines) as we have had reports of the installation crashing on some 32 bit Debian installations.
 
 ## Usage
 >[!NOTE]