server: add a couple doc comments (#22213)

## Description

Missed adding some doc comments in #22109

server/routerlicious/packages/services-client/api-report/server-services-client.api.md

@@ -63,7 +63,7 @@ export function convertSummaryTreeToWholeSummaryTree(parentHandle: string | unde
 // @internal
 export function convertWholeFlatSummaryToSnapshotTreeAndBlobs(flatSummary: IWholeFlatSummary, treePrefixToRemove?: string): INormalizedWholeSummary;
 
-// @internal (undocumented)
+// @internal
 export const CorrelationIdHeaderName = "x-correlation-id";
 
 // @internal
@@ -78,7 +78,7 @@ export const defaultHash = "00000000";
 // @internal
 export const DocDeleteScopeType = "doc:delete";
 
-// @internal (undocumented)
+// @internal
 export const DriverVersionHeaderName = "x-driver-version";
 
 // @internal (undocumented)
@@ -647,7 +647,7 @@ export class SummaryTreeUploadManager implements ISummaryUploadManager {
     writeSummaryTree(summaryTree: ISummaryTree_2, parentHandle: string, summaryType: IWholeSummaryPayloadType, sequenceNumber?: number, initial?: boolean): Promise<string>;
 }
 
-// @internal (undocumented)
+// @internal
 export const TelemetryContextHeaderName = "x-telemetry-context";
 
 // @internal

server/routerlicious/packages/services-client/src/constants.ts

@@ -4,14 +4,17 @@
  */
 
 /**
+ * HTTP Header name for a request/action's Correlation Id to trace an action across services.
  * @internal
  */
 export const CorrelationIdHeaderName = "x-correlation-id";
 /**
+ * HTTP Header name for the client's Driver Version to be sent to the service for telemetry purposes.
  * @internal
  */
 export const DriverVersionHeaderName = "x-driver-version";
 /**
+ * HTTP Header name for Telemetry Context data being passed from service to service.
  * @internal
  */
 export const TelemetryContextHeaderName = "x-telemetry-context";