doc: added TODO comment for updating commitmentHeader in metric middl…

…eware

server/server.go

@@ -68,6 +68,8 @@ func WithMetrics(handleFn func(http.ResponseWriter, *http.Request) error, m metr
 		// where the first 3 bytes of the path are the commitment header
 		// commit type | da layer type | version byte
 		// we want to group all requests by commitment header, otherwise the prometheus metric labels will explode
+		// TODO: commitment header is different for non-op commitments. We will need to change this to accomodate other commitments.
+		//       probably want (commitment mode, cert version) as the labels, since commit-type/da-layer are not relevant anyways.
 		commitmentHeader := r.URL.Path[:3]
 		recordDur := m.RecordRPCServerRequest(commitmentHeader)