Some functions don't show up in the docs

Some functions which are explicitly included in the .xxml files do not show up in the generated documentation.

Example: igraph_dim_select in

If I add the missing <!-- doxroc-include igraph_laplacian_spectral_embedding -->, it also does not show up. @ntamas, have you any idea what is going wrong here?

There may have been some bad character that looks like ASCII but isn’t. Almost fixed, but need to deal with some XML errors.

EDIT: Fully fixed by re-typing it from scratch and fixing errors in the actual doc comment. It must have been some non-ASCII characters.