fix wrong info (9020 doesn't have SOIC-16)

Signed-off-by: Leah Rowe <info@minifree.org>

site/docs/hardware/dell9020.md

@@ -168,8 +168,7 @@ This is to prevent short circuiting and power surges while flashing.**
 For general information, please refer to [25xx NOR flash
 instructions](../install/spi.md) - that page refers to use of socketed flash.
 
-This machine is somewhat cumbersome to flash, because it has a SOIC-16 flash
-for the first 8MB part, and 4MB SOIC8. You can split up your 12MB ROM image
+There are two SOIC-8 chips. You can split up your 12MB ROM image
 like so:
 
 	dd if=libreboot.rom of=4mb.rom bs=1M skip=8