Apply suggestions from code review

Co-authored-by: ldecarvalho-doc <[email protected]>

Author: SamyOubouaziz

pages/serverless-containers/reference-content/containers-sandbox.mdx

@@ -26,7 +26,7 @@ Scaleway Serverless Containers offers two sandbox environment options:
 Sandbox v1 is Serverless Containers' legacy sandboxing environment with slower [cold starts](/serverless-containers/concepts/#cold-start), but fully supports Linux system call interface.
 
 <Message type="important">
-Sandbox v1 are known to experience clock drift over time. A difference of approximately **two seconds** can be observed after 24 hours of uninterrupted execution. This issue especially affects long-running containers, whereas short-lived containers are much less impacted. Update to sandbox v2 to solve the issue.
+Sandbox v1 is known to experience clock drift over time. A difference of approximately **two seconds** can be observed after 24 hours of uninterrupted execution. This issue especially affects long-running containers, whereas short-lived containers are much less impacted. Update to sandbox v2 to solve the issue.
 </Message>
 
 ## Sandbox v2

pages/serverless-functions/reference-content/functions-sandbox.mdx

@@ -26,7 +26,7 @@ Scaleway Serverless Functions offers two sandbox environment options:
 Sandbox v1 is Serverless Functions' legacy sandboxing environment with slower [cold starts](/serverless-functions/concepts/#cold-start), but fully supports Linux system call interface.
 
 <Message type="important">
-Sandbox v1 are known to experience clock drift over time. A difference of approximately **two seconds** can be observed after 24 hours of uninterrupted execution. This issue especially affects long-running functions, whereas short-lived functions are much less impacted. Update to sandbox v2 to solve the issue.
+Sandbox v1 is known to experience clock drift over time. A difference of approximately **two seconds** can be observed after 24 hours of uninterrupted execution. This issue especially affects long-running functions, whereas short-lived functions are much less impacted. Update to sandbox v2 to solve the issue.
 </Message>
 
 ## Sandbox v2