IVGCVSW-6382 Add Unsqueeze operator support to ONNX parser

Signed-off-by: Narumol Prangnawarat <narumol.prangnawarat@arm.com>
Change-Id: Ie0b68b08fc31444c58b0ffc9babdd456bbb51f35
diff --git a/docs/01_01_parsers.dox b/docs/01_01_parsers.dox
index 31b7687..689c062 100644
--- a/docs/01_01_parsers.dox
+++ b/docs/01_01_parsers.dox
@@ -76,6 +76,8 @@
 - Tanh
   - See the ONNX [Tanh documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#Tanh) for more information.
 
+- Unsqueeze
+  - See the ONNX [Unsqueeze documentation](https://github.com/onnx/onnx/blob/master/docs/Operators.md#Unsqueeze) for more information.
 
 ### Partially supported