Update source/adapters/level_zero/command_buffer.hpp

Co-authored-by: Fábio <fabio.m.mestre@gmail.com>

Author: EwanC

source/adapters/level_zero/command_buffer.hpp

@@ -67,7 +67,7 @@ struct ur_exp_command_buffer_handle_t_ : public _ur_object {
 
   /**
    * Frees the resources associated with the command-buffer.
-   * @return UR_RESULT_SUCCESS or an error if a resources wasn't freed
+   * @return UR_RESULT_SUCCESS or an error if a resource wasn't freed
    * successfully.
    */
   ur_result_t cleanupCommandBufferResources();