Fix glob pattern for source paths containing a dot - #4131

When a source path contains a dot (e.g. test.1), it was assumed to be a
single file and the /**/* suffix was not appended, so phpDocumentor
never descended into the directory and reported an empty documentation
set.

The heuristic is dropped: each path now emits both /path and /path/**/*
so that file paths still match exactly and directory paths still recurse.