Update content/vault/v1.18.x/content/docs/upgrading/upgrade-to-1.18.x.mdx

Co-authored-by: Sarah Chavis <62406755+schavis@users.noreply.github.com>

Author: aslamovamir

content/vault/v1.18.x/content/docs/upgrading/upgrade-to-1.18.x.mdx

@@ -92,7 +92,7 @@ WARNING! The following warnings were returned from Vault:
 
 </CodeBlockConfig>
 
-#### Counters API requires start time in OSS Vault
+#### Counters API requires start time in Vault Community
 
 Vault Community requires the `start_time` parameter  for
 `/sys/internal/counters/activity`. Unlike Enterprise Vault, Vault Commuity does