Bug 1640739: help_help.xhtml: update findbar and print button locations. r=IanN

suite/locales/en-US/chrome/common/help/help_help.xhtml

@@ -50,7 +50,7 @@
   <li>To search inside a page, use the <kbd class="mac">Cmd</kbd><kbd
     class="noMac">Ctrl</kbd>+<kbd>F</kbd> shortcut. Enter the word or phrase
     you would like to find into the text field of the bar that will open at the
-    bottom and press <kbd class="mac">Return</kbd><kbd class="noMac">Enter</kbd>,
+    top and press <kbd class="mac">Return</kbd><kbd class="noMac">Enter</kbd>,
     or use the <q>Next</q> and <q>Previous</q> buttons to find the next match in
     the chosen direction. Use <q>Highlight all</q> to highlight your search
     phrase within the whole page. If you want to do a case-sensitive search,
@@ -82,7 +82,7 @@
 
 <ul>
   <li>To print the whole page that&apos;s currently displayed in the Help
-    window, click the Print button near the top-right corner of the Help
+    window, click the Print button near the top left corner of the Help
     window:
 
     <p><img src="images/help_print.gif" alt="" width="37" height="31"/></p>