Link to module.__path__ in NamespacePath docs

Signed-off-by: Filipe Laíns <lains@riseup.net>

Author: FFY00

Doc/library/importlib.rst

@@ -988,9 +988,10 @@ find and load modules.
 .. class:: NamespacePath(name, path, path_finder)
 
    Represents a namespace package's path.  It uses the module *name* to find its
-   parent module, and from there it looks up the parent's ``__path__``.  When
-   this changes, the module's own path is recomputed, using *path_finder*. For
-   top-level modules, the parent module's path is :data:`sys.path`.
+   parent module, and from there it looks up the parent's
+   :attr:`module.__path__`.  When this changes, the module's own path is
+   recomputed, using *path_finder*. For top-level modules, the parent module's
+   path is :data:`sys.path`.
 
 
 .. class:: SourceFileLoader(fullname, path)