Patch #651006: Better explain what component might be empty.
diff --git a/Doc/lib/libposixpath.tex b/Doc/lib/libposixpath.tex
index c5f992b..7825639 100644
--- a/Doc/lib/libposixpath.tex
+++ b/Doc/lib/libposixpath.tex
@@ -123,7 +123,7 @@
an absolute path, all previous components are thrown away, and joining
continues. The return value is the concatenation of \var{path1}, and
optionally \var{path2}, etc., with exactly one directory separator
-(\code{os.sep}) inserted between components, unless \var{path} is
+(\code{os.sep}) inserted between components, unless \var{path2} is
empty. Note that on Windows, since there is a current directory for
each drive, \function{os.path.join("c:", "foo")} represents a path
relative to the current directory on drive \file{C:} (\file{c:foo}), not