[fenix] For https://github.com/mozilla-mobile/fenix/issues/12673: Adjust top and left alignment of logo on homescreen (https://github.com/mozilla-mobile/fenix/pull/12676)

align collection title

app/src/main/res/layout/collection_header.xml

@@ -6,7 +6,6 @@
     android:id="@+id/collections_header_text"
     android:layout_width="wrap_content"
     android:layout_height="48dp"
-    android:layout_marginStart="4.5dp"
     android:gravity="center_vertical"
     android:text="@string/collections_header"
     android:textAppearance="@style/HeaderTextStyle" />

app/src/main/res/layout/fragment_home.xml

@@ -46,8 +46,8 @@
                 android:id="@+id/wordmark"
                 android:layout_width="wrap_content"
                 android:layout_height="40dp"
-                android:layout_marginStart="28dp"
-                android:layout_marginTop="56dp"
+                android:layout_marginStart="16dp"
+                android:layout_marginTop="18dp"
                 android:layout_marginBottom="32dp"
                 android:adjustViewBounds="true"
                 android:clickable="false"