Update serverless/functions/concepts.mdx

Co-authored-by: Rowena Jones <[email protected]>

Author: SamyOubouaziz

serverless/functions/concepts.mdx

@@ -74,7 +74,7 @@ A sandbox is an isolation area for your function. Serverless Functions offer two
 
 ## Scale to zero
 
-One of the advantages of Serverless Functions is that when your function is not triggered, it does not consume any resources, which allows for important savings.
+One of the advantages of Serverless Functions is that when your function is not triggered, it does not consume any resources, which allows for significant savings.
 
 ## Scaling