doc: changing documentation style and fixing links

10 jobs for master in 8 minutes and 51 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #418576
build-gcc-mpi

00:03:26

passed #418578
build-gcc-mpi-cuda

00:02:32

passed #418577
build-gcc-mpi-test

00:00:58

38.0%
passed #418579
build-intel-mpi

00:00:56

 
  Tests
passed #418580
verify_options

00:00:11

passed #418582
verify_probabilities

00:00:08

passed #418581
verify_tutorial

00:00:24

 
  Coverage
passed #418583
total_coverage

00:00:12

75.5%
 
  Deploy
passed #418584
pages

00:00:01

passed pages:deploy

00:00:00