set correct label in preference dialog

Author: sergiotomasello

modules/Preferences/html/preferences.html

@@ -12,7 +12,7 @@
         </div>
 
         <div class="form-inline">
-            {{LBL_BUILD}}:<select name="fontsize" id="pref_ddl_fontsize">
+            {{LBL_FONT_SIZE}}:<select name="fontsize" id="pref_ddl_fontsize">
                                 <option value="7">7</option>
                                 <option value="8">8</option>
                                 <option value="9">9</option>