COMPMID-3283: Update documentation for Android R operator support

Signed-off-by: Sheri Zhang <sheri.zhang@arm.com>
Change-Id: Iee5fb21e907b2807a5f8d4d40a7056d51e3a7b65
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/3097
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/docs/00_introduction.dox b/docs/00_introduction.dox
index 5585678..8155952 100644
--- a/docs/00_introduction.dox
+++ b/docs/00_introduction.dox
@@ -277,6 +277,15 @@
      - @ref CPPPermute
      - @ref CPPTopKVKernel
      - @ref CPPTopKV
+ - New OpenCL kernels / functions:
+     - @ref CLQLSTMLayer
+     - @ref CLQLSTMLayerNormalizationKernel
+ - New NEON kernels / functions:
+     - @ref NEQLSTMLayer
+     - @ref NEQLSTMLayerNormalizationKernel
+ - Added HARD_SWISH support in:
+     - @ref CLActivationLayerKernel
+     - @ref NEActivationLayerKernel
  - Deprecated OpenCL kernels / functions:
      - CLGEMMLowpQuantizeDownInt32ToUint8Scale
      - CLGEMMLowpQuantizeDownInt32ToUint8ScaleByFloat