core: name preference "Access Tools"

"Access Tool" sounds like a tool to access, but this setting is about
giving access to ERP5 tools from the module list.

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/Preference_viewHtmlStyle/my_preferred_html_style_access_tool.xml

@@ -163,7 +163,7 @@
                 </item>
                 <item>
                     <key> <string>title</string> </key>
-                    <value> <string>Access Tool</string> </value>
+                    <value> <string>Access Tools</string> </value>
                 </item>
               </dictionary>
             </value>