docs: add note about path prefix matching behavior for HTTPRoute conf…

…ig (#17860)

* Add note about path prefix matching behavior for HTTPRoute config

* Update website/content/docs/connect/gateways/api-gateway/configuration/http-route.mdx

Co-authored-by: trujillo-adam <47586768+trujillo-adam@users.noreply.github.com>

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Co-authored-by: trujillo-adam <47586768+trujillo-adam@users.noreply.github.com>

website/content/docs/connect/gateways/api-gateway/configuration/http-route.mdx

@@ -533,6 +533,11 @@ Specifies the HTTP method to match.
 
 Specifies type of match for the path: `"exact"`, `"prefix"`, or `"regex"`.
 
+If set to `prefix`, Consul uses simple string matching to identify incoming request prefixes. For example, if the route is configured to match incoming requests to services prefixed with `/dev`, then the gateway would match requests to `/dev-` and `/deviate` and route to the upstream.  
+
+This deviates from the
+[Kubernetes Gateway API specification](https://gateway-api.sigs.k8s.io/references/spec/#gateway.networking.k8s.io%2fv1beta1.PathMatchType), which matches on full path elements. In the previous example, _only_ requests to `/dev` or `/dev/` would match. 
+
 #### Values
 
 - Default: none