address comments

include/grpc++/health_check_service_interface.h

@@ -60,6 +60,7 @@ class HealthCheckServiceInterface {
 /// NOT thread safe.
 void EnableDefaultHealthCheckService(bool enable);
 
+/// Returns whether the default health checking service is enabled.
 /// NOT thread safe.
 bool DefaultHealthCheckServiceEnabled();
 

include/grpc++/resource_quota.h

@@ -47,7 +47,7 @@ namespace grpc {
 /// all attached entities below the ResourceQuota bound.
 class ResourceQuota final : private GrpcLibraryCodegen {
  public:
-  // \param name - a unique name for this ResourceQuota.
+  /// \param name - a unique name for this ResourceQuota.
   explicit ResourceQuota(const grpc::string& name);
   ResourceQuota();
   ~ResourceQuota();