Review edits - Harmonize_Pensacola.Rmd

[jbousquin]

-Small language changes suggested to make the installation process more user-friendly and clear:
-make it clear when something is an option to run and when it's step-by-step instruction, as it switches back an forth in this demo. For example, could add "# Install the harmonize-wq package... [#option 1] package install... [#option 2] development version..."
-Clearer separation of code chunks by task, so each code chunk focuses on a specific task. This makes debugging/error message interpretation easier. Ie a new code chunk after options(reticulate.conda_binary = "..."), new code chunks after conda_install() section (lines 72, 81). (For good examples see the .ipynb demo files for this package).
-I think use_condaenv("wq_harmonize") should be use_condaenv("wq-reticulate") (line 90)