Update styling-the-navigator.md

docs/styling-the-navigator.md

   collapsingToolBarCollapsedColor: '#0f2362', // Collapsing Toolbar scrim color.
   navBarTextFontBold: false, // Optional. Set the title to bold.
   navBarHeight: 70, // Optional, set the navBar height in pixels.
-  navBarTopPadding: 24, // Optional, set navBar top padding in pixels. Useful when StatusBar.translucent=true on Android Lollipop and above.
+  navBarTopPadding: 24, // Optional, set navBar top padding in dp. Useful when StatusBar.translucent=true on Android Lollipop and above.
   topTabsHeight: 70, // Optional, set topTabs height in pixels.
   topBarBorderColor: 'red', // Optional, set a flat border under the TopBar.
   topBarBorderWidth: 5.5, // Optional, set the width of the border.