[JOSE review] figure order and duplication

[aloctavodia]

• In https://alpn-lab.github.io/BayesCog/workshops/01.R_basics/qmd/probability.html the figure for joint probability is before the section on joint probability, and the figure for conditional probability is before the section on conditional probability. The same for marginal probability. Additionally, the figure for marginal probability is missing, and instead, the figure for conditional probability is repeated.