Nested (indented) lists recognized as markdownCodeBlock

[kmlawson]

This line:

syn region markdownCodeBlock start=" \|\t" end="$" contained

Appears to create issues with nested lists:

• First bullet point is fine
  • Second bullet point is fine
    • Third bullet point turns green, and a check shows it recognized as markdownCodeBlock

When I comment out this line and re-open vim, all third level (or higher) code is returned to normal coloring.