x86, doc: fix references to Documentation/x86/i386/boot.txt

Impact: Documentation fix

The amazing dancing boot.txt file has jumped places again.  It should
never have been in Documentation/x86/i386, since it never was
32-bit-specific, but it unfortunately ended up there for a while.

Signed-off-by: Kyle McMartin <kyle@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 319785b..f6d5d5b 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -114,7 +114,7 @@
 Parameters denoted with BOOT are actually interpreted by the boot
 loader, and have no meaning to the kernel directly.
 Do not modify the syntax of boot loader parameters without extreme
-need or coordination with <Documentation/x86/i386/boot.txt>.
+need or coordination with <Documentation/x86/boot.txt>.
 
 There are also arch-specific kernel-parameters not documented here.
 See for example <Documentation/x86/x86_64/boot-options.txt>.
@@ -2449,7 +2449,7 @@
 			See Documentation/fb/modedb.txt.
 
 	vga=		[BOOT,X86-32] Select a particular video mode
-			See Documentation/x86/i386/boot.txt and
+			See Documentation/x86/boot.txt and
 			Documentation/svga.txt.
 			Use vga=ask for menu.
 			This is actually a boot loader parameter; the value is