doc: dfu: fix typo in README.dfu
Fix "ram" typos for serial flash
Signed-off-by: Chance.Yang <chance.yang@vatics.com>
diff --git a/doc/README.dfu b/doc/README.dfu
index 4b9f883..be53b5b 100644
--- a/doc/README.dfu
+++ b/doc/README.dfu
@@ -121,7 +121,7 @@
"sf" (serial flash : NOR)
cmd: dfu 0 sf <dev>
each element in "dfu_alt_info" =
- <name> ram <offset> <size> raw access to sf device
+ <name> raw <offset> <size> raw access to sf device
<name> part <dev> <part_id> raw acces to partition
<name> partubi <dev> <part_id> raw acces to ubi partition