updated Override Fog page (#6200)

* updated fog override screenshot

* changed Depth Extent to Volumetric Fog Distance

Author: emilybrown1

com.unity.render-pipelines.high-definition/Documentation~/Images/fog-overrides.png

@@ -13,7 +13,7 @@ After you add an **Fog** override, you must enable it in the override itself. In
 
 At this point, the Scene contains global fog. However, the effect might not suit your needs. To override the default property with your own chosen values, follow the steps in the [Customizing Global Fog](#CustomizingGlobalFog) section.
 
-The High Definition Render Pipeline evaluates volumetric lighting on a 3D grid mapped to the volumetric section of the frustum. The resolution of the grid is quite low (it is 240x135x64 using the default quality setting at 1080p), so it's important to keep the dimensions of the frustum as small as possible to maintain high quality. Adjust the **Depth Extent** parameter to define the maximum range for the volumetric fog relative to the Camera’s frustum.
+The High Definition Render Pipeline evaluates volumetric lighting on a 3D grid mapped to the volumetric section of the frustum. The resolution of the grid is quite low (it is 240x135x64 using the default quality setting at 1080p), so it's important to keep the dimensions of the frustum as small as possible to maintain high quality. Adjust the **Volumetric Fog Distance** parameter to define the maximum range for the volumetric fog relative to the Camera’s frustum.
 
 The Fog may not work when using a custom camera projection matrix, like an off-axis projection.
 
@@ -37,7 +37,7 @@ The **Fog** override of the active Volume controls the appearance of the global
 
 ## Properties
 
-![](Images/Override-VolumetricFog1.png)
+![](Images/fog-overrides.png)
 
 [!include[](snippets/Volume-Override-Enable-Properties.md)]