Fix doxygen references to new kernels

Resolves COMPMID-4117

Change-Id: I9945a92402e34b9cfe0ba9ef2a961b168bf62721
Signed-off-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4883
Reviewed-by: Pablo Marquez Tello <pablo.tello@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/arm_compute/runtime/NEON/functions/NEConcatenateLayer.h b/arm_compute/runtime/NEON/functions/NEConcatenateLayer.h
index d16ab13..6aa724a 100644
--- a/arm_compute/runtime/NEON/functions/NEConcatenateLayer.h
+++ b/arm_compute/runtime/NEON/functions/NEConcatenateLayer.h
@@ -56,7 +56,8 @@
     /** Initialise the kernel's inputs vector and output.
      *
      * @note Input and output tensor dimensions preconditions defer depending on the concatenation axis.
-     * @note Preconditions can be found respectively at @ref NEWidthConcatenateLayerKernel, @ref NEHeightConcatenateLayerKernel and @ref NEDepthConcatenateLayerKernel.
+     * @note Preconditions can be found respectively at @ref cpu::kernels::CpuConcatenateWidthKernel, @ref cpu::kernels::CpuConcatenateHeightKernel,
+     *       @ref cpu::kernels::CpuConcatenateDepthKernel and @ref cpu::kernels::CpuConcatenateBatchKernel.
      *
      * @param[in,out] inputs_vector The vectors containing all the tensors to concatenate. Data types supported: QASYMM8/QASYMM8_SIGNED/F16/F32.
      * @param[out]    output        Output tensor. Data types supported: Same as @p input.
@@ -66,7 +67,8 @@
     /** Static function to check if given info will lead to a valid configuration of @ref NEConcatenateLayer
      *
      * @note Input and output tensor dimensions preconditions defer depending on the concatenation axis.
-     * @note Preconditions can be found respectively at @ref NEWidthConcatenateLayerKernel, @ref NEHeightConcatenateLayerKernel and @ref NEDepthConcatenateLayerKernel.
+     * @note Preconditions can be found respectively at @ref cpu::kernels::CpuConcatenateWidthKernel, @ref cpu::kernels::CpuConcatenateHeightKernel,
+     *       @ref cpu::kernels::CpuConcatenateDepthKernel and @ref cpu::kernels::CpuConcatenateBatchKernel.
      *
      * @param[in] inputs_vector The vectors containing all the tensors info to concatenate. Data types supported: QASYMM8/QASYMM8_SIGNED/F16/F32.
      * @param[in] output        Output tensor info. Data types supported: Same as @p input.