Update README.md

Author: Vectorial1024

README.md

@@ -21,7 +21,7 @@ via Composer:
 composer require vectorial1024/open-location-code-php
 ```
 
-**Special Notice**: to ensure 32-bit PHP compatibility, this library uses `float` variables instead of `int` variables to handle Open Location Codes.
+**Special Notice**: to ensure 32-bit PHP compatibility, this library uses `float` variables instead of `int` variables to calculate Open Location Codes.
 This may cause inaccuracies in some unforseen edge cases, but generally speaking, there should be no problems.
 
 ## Example code