Make focus task a bit bigger

Bug: 175939487
Test: manual
Change-Id: I0e4a13e02331ab9f4a8b1634197d7bf268edac68
diff --git a/quickstep/res/values/dimens.xml b/quickstep/res/values/dimens.xml
index 4f9b3eb..c459472 100644
--- a/quickstep/res/values/dimens.xml
+++ b/quickstep/res/values/dimens.xml
@@ -36,7 +36,7 @@
     <dimen name="overview_grid_bottom_margin">90dp</dimen>
     <dimen name="overview_grid_side_margin">54dp</dimen>
     <dimen name="overview_grid_row_spacing">42dp</dimen>
-    <dimen name="overview_grid_focus_vertical_margin">130dp</dimen>
+    <dimen name="overview_grid_focus_vertical_margin">90dp</dimen>
     <dimen name="split_placeholder_size">110dp</dimen>
 
     <dimen name="recents_page_spacing">16dp</dimen>