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/tests/datasets/DepthwiseConvolutionLayerDataset.h b/tests/datasets/DepthwiseConvolutionLayerDataset.h
index 4a0637d..0413cd0 100644
--- a/tests/datasets/DepthwiseConvolutionLayerDataset.h
+++ b/tests/datasets/DepthwiseConvolutionLayerDataset.h
@@ -113,6 +113,8 @@
     std::vector<TensorShape>   _dst_shapes{};
     std::vector<PadStrideInfo> _infos{};
 };
+
+/** Dataset containing small, generic depthwise convolution shapes. */
 class SmallDepthwiseConvolutionLayerDataset final : public DepthwiseConvolutionLayerDataset
 {
 public:
@@ -135,6 +137,7 @@
     }
 };
 
+/** Dataset containing large, generic depthwise convolution shapes. */
 class LargeDepthwiseConvolutionLayerDataset final : public DepthwiseConvolutionLayerDataset
 {
 public:
@@ -149,6 +152,7 @@
     }
 };
 
+/** Dataset containing small, 3x3 depthwise convolution shapes. */
 class SmallDepthwiseConvolutionLayerDataset3x3 final : public DepthwiseConvolutionLayerDataset
 {
 public:
@@ -165,6 +169,7 @@
     }
 };
 
+/** Dataset containing large, 3x3 depthwise convolution shapes. */
 class LargeDepthwiseConvolutionLayerDataset3x3 final : public DepthwiseConvolutionLayerDataset
 {
 public:
@@ -178,6 +183,8 @@
         add_config(TensorShape(177U, 311U, 22U), TensorShape(3U, 3U, 22U), TensorShape(89U, 311U, 22U), PadStrideInfo(2, 1, 1, 1));
     }
 };
+
+/** Dataset containing optimized, 3x3 depthwise convolution shapes. */
 class OptimizedDepthwiseConvolutionLayerDataset3x3 final : public DepthwiseConvolutionLayerDataset
 {
 public: