fix markdown formatting of bullet list

[sappelhoff]

fixes the proper formatting of bullet lists:

Example:

my list will work:  # note: no indentation for bullets
- foo
- bar

my list won't work: 
    - foo
    - bar

my list will work:  # note the blank line when using indentation

    - foo
    - bar

Rendered:

my list will work:

• foo
• bar

my list won't work:

• foo -bar

my list will work: # but probably different than expected

- foo
- bar

[peircej]

Thanks. FYI the reason for the bullet point failure was that this was originally restructured text instead of markdown. :)

[sappelhoff]

I see :-) at least I had my chance to contribute to something I like