website: Fix typo in checkpoints

Change "pseduo" to "pseudo" in checkpoints documentation.

Change-Id: I913c5defbbdc81be23fac3bb138a651fa34ef9af
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/62172
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
1 file changed