Typo in GLM hierarchical binomial model

Notebook title: GLM hierarchical binomial model
Notebook url: https://github.com/pymc-devs/pymc-examples/blob/main/examples/generalized_linear_models/GLM-hierarchical-binominal-model.ipynb

Issue description

I found several minor errors in the notebook, listed as follows:

• In the notebook title and its filename, is the word binominal instead of binomial chosen by intention?
• I found several typos in hierarchical in various spelling, namely heirarchical and heirarchichal.
• There is inconsistency in PyMC3 spelling, which is pymc3.

And I would suggest suppressing the matplotlib code line (e.g. <AxesSubplot:xlabel='X', ylabel='Z'>) on figure output by putting the semicolon in the last line of code.

I would be happy to open a PR if any of the errors mentioned above are valid.

Open the notebook at examples/generalized_linear_models/GLM-hierarchical-binominal-model.ipynb and review its title, filename, text, and displayed outputs. Correct the binomial, hierarchical, and PyMC3 spellings and suppress the matplotlib AxesSubplot output where requested; the rendered notebook should contain no listed errors or unwanted output.