Notebooks detailed checks

[mknorps]

To finish #179, we split the detailed check work of notebooks to a separate issue.

We want tutorials and examples to be:

• easy to run
• run without failure and correctly
• describe their subject clearly
• coherent with the web html renderings and this issue is to ensure that.

Tutorials:

• [x] Advanced sampling https://github.com/tweag/monad-bayes/pull/226
• [x] Bayesian https://github.com/tweag/monad-bayes/pull/220
• [x] Introduction
• [x] Lazy https://github.com/tweag/monad-bayes/pull/227
• [x] MCMC https://github.com/tweag/monad-bayes/pull/223
• [x] SMC https://github.com/tweag/monad-bayes/pull/225
• [x] Sampling https://github.com/tweag/monad-bayes/pull/206

Examples:

• [ ] Classical Physics
• [ ] Diagrams
• [x] Histogram https://github.com/tweag/monad-bayes/pull/228
• [x] Lenses https://github.com/tweag/monad-bayes/pull/228
• [ ] Ising
• [x] Parsing https://github.com/tweag/monad-bayes/pull/228
• [x] Streaming https://github.com/tweag/monad-bayes/pull/228