consistency in contentful markdown

[claudioccm]

Starting to list some best practices here:

• if it is a single item, don't use lists
• we have 2 levels of nested lists. If we need a third level, we should use H5s on the top level list, to create separators for the list.
• to use the nested list, indent with 4 spaces
• if you are doing nested lists, it can be useful to use the bold feature, to intensify the difference between the 2 levels. (this is not advisable to do programmatically)
• whitespace matters: if you add empty lines between the item, markdown will create ps between them.