chore(divider): update v6 images (#4304)

packages/documentation-site/patternfly-docs/content/design-guidelines/components/divider/divider.md

@@ -8,14 +8,14 @@ Use a divider as a visual cue to help to convey content separations and grouping
 
 A divider can be used to visually separate content sections, potentially spanning the entire width of the content area. 
 
-<img src="./img/utilization.png" alt="Example of divider used to seperate a content area into different parts" width="747"/>
+![Horizontal dividers in a dashboard](./img/dashboard-dividers.png)
 
 ## Variations
 
 A **vertical divider** can be used to separate items within a horizontal list, such as a menu or toolbar. 
 
-<img src="./img/vertical.png" alt="Example of vertical divider in use to seperate actions" width="492"/>
+![Example of vertical divider in use to separate actions](./img/vertical-divider.png)
 
 A **horizontal divider** can be used to separate items within a vertical list, such as a dropdown menu.
 
-<img src="./img/horizontal.png" alt="Example of horizontal divider in use to options in dropdown menu" width="220"/>
+![Horizontal divider that separates options in dropdown menu](./img/menu-divider.png)