Using /// breaks markdown headings

[grantroch]

Using markdown headers within a doc-comment does not render the header correctly. This is very similar to #38 in that using /** ... */ works but /// does not but for the header instead. Below the same example code as in that case.

namespace example {

/** First function
 *
 * This one uses block comments and multiple paragraphs and such can be used.
 *
 * #### Example
 *
 * ```c++
 * first();
 * ```
 */
void first();

/// Second function
///
/// This one uses single-line comments and the paragraphs are broken.
///
/// #### Example
///
/// ```c++
/// second();
/// ```
void second();

} // namespace example

This renders the header correctly for first but not for second. From what I can see, the only difference in the rendered markdown is an extra space before the markdown in the instance that doesn't work.

[lawmurray]

Thanks for the report @grantroch. I've reproduced this and am looking into it.

[lawmurray]

A little more testing to come, but generally have this fixed now along with other related issues (e.g. admonitions had similar problems).

[lawmurray]

Thanks again for this report @grantroch . Fixes our now incorporated into v0.4.5 and released.

[grantroch]

Thank you, @lawmurray!