docs: Revert Configuration class section

Signed-off-by: Patrik Braborec <[email protected]>

Author: patrikbraborec

sources/platform/actors/development/programming_interface/environment_variables.md

@@ -170,9 +170,9 @@ async def main():
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-## Access system environment variables
+## Use the `Configuration` class
 
-For more convenient access to Actor system variables and other configuration, use the [`Configuration`](/sdk/js/reference/class/Configuration) class as follows:
+For more convenient access to Actor configuration, use the [`Configuration`](/sdk/js/reference/class/Configuration) class
 
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