Creating link to not defined label in case of groups

In the doxygen group example there is for group 5 a "More" link but this points to nowhere as there is no detailed section. Using a link checker this gives:
```
Processing      file:///.../html/group__group5.html

List of broken links and other issues:
file:///.../html/group__group5.html
  Line: 47
  Code: 200 (no message)
 To do: Some of the links to this resource point to broken URI fragments
        (such as index.html#fragment).
The following fragments need to be fixed:
        details                         Line: 47
```

By applying the same logic for creating the "More" link as for for the real writing and using the appropriate function (with correction) for it

0 files changed, 0 insertions, 0 deletions