Update pages/serverless-containers/concepts.mdx

Co-authored-by: Néda <[email protected]>

Author: SamyOubouaziz

pages/serverless-containers/concepts.mdx

@@ -96,7 +96,7 @@ An endpoint is the URL generated to access your resource. It can be customized w
 
 ## Environment variables
 
-Environment variables are key/value pairs injected in your container. They are useful to share information such as configurations with your container. Environment variables defined at the container level override the ones defined at the namespace level if they have the same name.
+Environment variables are key/value pairs injected into your container. They are useful to share information such as configurations with your container. Environment variables defined at the container level override the ones defined at the namespace level if they have the same name.
 
 Some names are reserved. [See details about reserved names](/serverless-containers/reference-content/containers-limitations/#configuration-restrictions).