x86: doc: Correct qfw command example

The kernel load address for zboot should be 0x1000000.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/doc/README.x86 b/doc/README.x86
index 437dc29..c34f455 100644
--- a/doc/README.x86
+++ b/doc/README.x86
@@ -449,7 +449,7 @@
 Here the kernel (bzImage) is loaded to 01000000 and initrd is to 04000000. Then,
 'zboot' can be used to boot the kernel:
 
-=> zboot 02000000 - 04000000 1b1ab50
+=> zboot 01000000 - 04000000 1b1ab50
 
 CPU Microcode
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