Update pages/instances/troubleshooting/fix-unreachable-ipv6-rhel-based-instance.mdx

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

Author: bene2k1

pages/instances/troubleshooting/fix-unreachable-ipv6-rhel-based-instance.mdx

@@ -25,7 +25,7 @@ The affected O/S distributions are:
 - Fedora versions 37 and 38.
 
 <Message type="note">
-  CentOS 7.9 is not concerned by this issue as it does not support routed IP.
+  CentOS 7.9 is not concerned by this issue, as it does not support routed IP.
 </Message>
 
 This guide addresses specific issues related to RHEL-based Instances after transitioning to routed IP.