Use 16sp text to show important notice title

Bug: 10587358
Change-Id: Ib840cb71d9e87282ea0d13839dbf2a2da2081d5f

java/res/layout/suggestions_strip.xml

@@ -55,7 +55,7 @@
             android:text="@string/important_notice_title"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
-            android:textSize="14sp"
+            android:textSize="16sp"
             style="?attr/suggestionWordStyle" />
     </LinearLayout>
 </merge>