IVGCVSW-4496 Updated ONNX documentation

 - Updated supported operators

Signed-off-by: Ryan OShea <Ryan.OShea2@arm.com>
Change-Id: I9b67eed3ac6dd910313acddb5673b5767ca19ac4
diff --git a/docs/01_parsers.dox b/docs/01_parsers.dox
index afa9b9c..1b581dd 100644
--- a/docs/01_parsers.dox
+++ b/docs/01_parsers.dox
@@ -84,19 +84,41 @@
 
 - Add
   - See the ONNX [Add documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#Add) for more information
+
 - AveragePool
   - See the ONNX [AveragePool documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#AveragePool) for more information.
+
 - Constant
   - See the ONNX [Constant documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#Constant) for more information.
+
+- Clip
+  - See the ONNX [Clip documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#Clip) for more information.
+
+- Flatten
+  - See the ONNX [Flatten documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#Flatten) for more information.
+
 - GlobalAveragePool
   - See the ONNX [GlobalAveragePool documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#GlobalAveragePool) for more information.
+
+- LeakyRelu
+  - See the ONNX [LeakyRelu documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#LeakyRelu) for more information.
+
 - MaxPool
   - See the ONNX [max_pool documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#MaxPool) for more information.
+
 - Relu
   - See the ONNX [Relu documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#Relu) for more information.
+
 - Reshape
   - See the ONNX [Reshape documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#Reshape) for more information.
 
+- Sigmoid
+  - See the ONNX [Sigmoid documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#Sigmoid) for more information.
+
+- Tanh
+  - See the ONNX [Tanh documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#Tanh) for more information.
+
+
 ## Partially supported
 
 - Conv
diff --git a/src/armnnOnnxParser/OnnxSupport.md b/src/armnnOnnxParser/OnnxSupport.md
index 7d81e8d..4a9645d 100644
--- a/src/armnnOnnxParser/OnnxSupport.md
+++ b/src/armnnOnnxParser/OnnxSupport.md
@@ -18,10 +18,23 @@
 
 See the ONNX [Constant documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#Constant) for more information.
 
+**Clip**
+
+See the ONNX [Clip documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#Clip) for more information.
+
+**Flatten**
+
+See the ONNX [Flatten documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#Flatten) for more information.
+
 **GlobalAveragePool**
 
 See the ONNX [GlobalAveragePool documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#GlobalAveragePool) for more information.
 
+**LeakyRelu**
+
+See the ONNX [LeakyRelu documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#LeakyRelu) for more information.
+
+
 **MaxPool**
 
 See the ONNX [max_pool documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#MaxPool) for more information.
@@ -34,6 +47,16 @@
 
 See the ONNX [Reshape documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#Reshape) for more information.
 
+**Sigmoid**
+
+See the ONNX [Sigmoid documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#Sigmoid) for more information.
+
+
+**Tanh**
+
+See the ONNX [Tanh documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#Tanh) for more information.
+
+
 ## Partially supported
 
 **Conv**