faq: Add 'format data' feature in the 'openrecoveryscript' page

Change-Id: Iecf99a25ed66b581e8a4ea5444a2737981514772
diff --git a/_faq/openrecoveryscript.markdown b/_faq/openrecoveryscript.markdown
index 7cb7e62..450efe1 100644
--- a/_faq/openrecoveryscript.markdown
+++ b/_faq/openrecoveryscript.markdown
@@ -39,12 +39,15 @@
 <div class="desc">	install <b>FILENAME</b> zip file.</div>
 
 <b>wipe</b> PARTITION :
-<div class="desc">	format <b>PARTITON</b>, one by line:
+<div class="desc">	format <b>PARTITION</b>, one by line:
 		cache,
 		system,
 		dalvik,
 		data.</div>
 
+<b>format</b> data :
+<div class="desc">	format <b>data</b></div>
+
 <b>backup</b> PARTITIONS-TO-BACKUP [BACKUP-NAME] :
 <div class="desc"> 	backup partition <b>PARTITIONS-TO-BACKUP</b> to [<b>BACKUP-NAME</b>]
 	<b>PARTITIONS-TO-BACKUP</b>, multiples selection allowed: