Tutorials 4 and 5 minor edits

[dcol2804]

Tutorial 4: I'm not sure how essential this is but should there be a line reminding the user to add in the description, basis_of_record, life_stage and sampling_strategy from the.txt file? And to add the location details as per tutorial 3 (creating a location column and adding coordinates from sampling strategy text?). If sampling_strategy text from the .txt file is pasted in, the degree symbol on the text also creates an error when I tested the dataset - I converted this text to decimal degrees using an online converter.. not sure if this was the best way to do this?

Tutorial 5: Extremely minor, but I did wonder what the date2 column in the data was for when I assigned the date column.

[dfalster]

@ehwenk for you

[ehwenk]

I've fixed the degree signs (replacing with the word "deg" under sampling strategy, but the intent for adding location in Tutorial 4 was to add latitude/longitude directly from the data file using the code provided, rather than manually - https://traitecoevo.github.io/traits.build-book/tutorial_dataset_4.html#location_names.