Documentation: x86: fix space instead of tab in uefi doc

Signed-off-by: Flavio Suligoi <f.suligoi@asem.it>
Link: https://lore.kernel.org/r/1588080745-21999-1-git-send-email-f.suligoi@asem.itSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/x86/x86_64/uefi.rst

@@ -36,7 +36,7 @@ Mechanics
 
 	elilo bootloader with x86_64 support, elilo configuration file,
 	kernel image built in first step and corresponding
-	initrd. Instructions on building elilo	and its dependencies
+	initrd. Instructions on building elilo and its dependencies
 	can be found in the elilo sourceforge project.
 
 - Boot to EFI shell and invoke elilo choosing the kernel image built