docs: updated NIFTy gallery link to new gallery

9 jobs for new_gallery in 8 minutes and 4 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build Docker
passed #725596
build_docker_from_cache

00:00:15

 
  Test
passed #725598
test_mpi

00:04:02

passed #725597
test_serial

00:04:49

83.0%
 
  Demo Runs
passed #725603
run_bernoulli

00:00:25

passed #725604
run_curve_fitting

00:00:25

passed #725600
run_getting_started_1

00:00:27

passed #725601
run_getting_started_2

00:01:14

passed #725602
run_getting_started_3

00:02:58

passed #725599
run_ipynb

00:01:26