fix: regression space in Book menu

Fixes earlier commit

Fix 9868b04fae

wowchemy/assets/scss/wowchemy/layouts/_book.scss

@@ -72,6 +72,10 @@
       z-index: 10;
       height: calc(100vh - 50px);
     }
+    .no-navbar .docs-sidebar {
+      top: 0;
+      height: 100vh;
+    }
   }
 }
 
@@ -87,14 +91,13 @@
       z-index: 10;
       height: calc(100vh - 70px);
     }
+    .no-navbar .docs-sidebar {
+      top: 0;
+      height: 100vh;
+    }
   }
 }
 
-.no-navbar .docs-sidebar {
-  top: 0;
-  height: 100vh;
-}
-
 @media (min-width: 1200px) {
   .docs-sidebar {
     flex: 0 1 320px;