Backport of Update service-discovery.mdx into release/1.14.x (#15862)

* backport of commit 93fc1a3b96

* backport of commit e6921def76

Co-authored-by: Vladislav Sharapov <vladislav.sharapov@proton.me>
Co-authored-by: Jeff Boruszak <104028618+boruszak@users.noreply.github.com>

website/content/docs/concepts/service-discovery.mdx

@@ -21,7 +21,7 @@ Service discovery provides benefits for all organizations, ranging from simplifi
 - Faster deployment times achieved by high-speed discovery
 - Automated service registration and de-registration
 
-## How does a service mesh work?
+## How does service discovery work?
 
 Service discovery uses a service's identity instead of traditional access information (IP address and port). This allows you to dynamically map services and track any changes within a service catalog. Service consumers (users or other services) then use DNS to dynamically retrieve other service's access information from the service catalog. The lifecycle of a service may look like the following: