COMPMID-1008: Fix Doxygen issues

Change-Id: Ie73d8771f85d1f5b059f3a56f1bbd73c98e94a38
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/124723
Reviewed-by: Michalis Spyrou <michalis.spyrou@arm.com>
Tested-by: Jenkins <bsgcomp@arm.com>
diff --git a/arm_compute/runtime/ILifetimeManager.h b/arm_compute/runtime/ILifetimeManager.h
index 6f2c68d..36743ac 100644
--- a/arm_compute/runtime/ILifetimeManager.h
+++ b/arm_compute/runtime/ILifetimeManager.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 ARM Limited.
+ * Copyright (c) 2017-2018 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -43,7 +43,7 @@
     virtual ~ILifetimeManager() = default;
     /** Registers a group to the lifetime manager and assigns a group id
      *
-     * @return The group id of the group
+     * @param[in] group The group id of the group
      */
     virtual void register_group(IMemoryGroup *group) = 0;
     /** Registers and starts lifetime of an object