spelling.txt: "modeled" is spelt correctly

No need to correct the correct.

Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Joe Perches <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

scripts/spelling.txt

···
 miximum||maximum
 mmnemonic||mnemonic
 mnay||many
-modeled||modelled
 modulues||modules
 monochorome||monochrome
 monochromo||monochrome