Add missing links

[soehms]

Currently the migration script doesn't convert links that don't have a display text. This will be fixed here.

[mkoeppe]

Thanks!

[mkoeppe]

However, links such as https://github.com/sagemath/trac_to_gh/wiki/symbolics/maxima.md are strange

[soehms]

However, links such as https://github.com/sagemath/trac_to_gh/wiki/symbolics/maxima.md are strange

I tested locally with grip which gives you the rendered version. Even from the root of a GitHub repository these pages are rendered. I've no idea why from the wiki you get it raw.

[soehms]

However, links such as https://github.com/sagemath/trac_to_gh/wiki/symbolics/maxima.md are strange

I tested locally with grip which gives you the rendered version. Even from the root of a GitHub repository these pages are rendered. I've no idea why from the wiki you get it raw.

The reason seems to be that I added the extension .md (since without I got a 404 error in my tests, see this stackoverflow question). Another difference to usual relative links is, that sub-directory paths have to be stripped. I will take care of that in the next PR #19.