update changelog for v0.4.0

Author: jaybdub

CHANGELOG.md

@@ -1,6 +1,8 @@
 # Changes
 
-## [Master]
+## [master](https://github.com/NVIDIA-AI-IOT/torch2trt/tree/master)
+
+## [0.4.0](https://github.com/NVIDIA-AI-IOT/torch2trt/tree/v0.4.0) - 07/22/2022
 
 - Added converter for ``torch.nn.functional.group_norm`` using native TensorRT layers
 - Added converter for ``torch.nn.ReflectionPad2d`` using plugin layer
@@ -9,7 +11,7 @@
 - Added support for explicit batch
 - Added support for TensorRT 8
 
-## [0.3.0] - 07/15/2021
+## [0.3.0](https://github.com/NVIDIA-AI-IOT/torch2trt/tree/v0.3.0) - 07/15/2021
 
 - Added converter for ``torch.nn.functional.adaptive_avg_pool3d``
 - Added converter for ``torch.nn.functional.adaptive_max_pool3d``
@@ -21,13 +23,10 @@
 - Added converter for ``torch.nn.functional.linear``
 - Added converter for ``torch.nn.functional.silu``
 
-## [0.2.0] - 03/02/2021
+## [0.2.0](https://github.com/NVIDIA-AI-IOT/torch2trt/tree/v0.2.0) - 03/02/2021
 
 - Added converter for ``torch.Tensor.flatten``
 - Added converter for ``torch.nn.functional.conv2d`` and ``torch.nn.functional.conv3d``
-
-### Added 
-
 - Added converter for ``torch.Tensor.expand``
 - Added support for custom converters for methods defined outside of ``torch`` module
 - Added names for TensorRT layers