"How to turn on 6pack support" is a subsection of "Building and
installing the 6pack driver". Yet, the former is in the same heading
level as the latter as sections, making it listed in networking docs
toctree.

Demote it to subsection.

Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
---
 Documentation/networking/6pack.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/networking/6pack.rst b/Documentation/networking/6pack.rst
index bc5bf1f1a98fb7..66d5fd4fc82128 100644
--- a/Documentation/networking/6pack.rst
+++ b/Documentation/networking/6pack.rst
@@ -94,7 +94,7 @@ kernels may lead to a compilation error because the interface to a kernel
 function has been changed in the 2.1.8x kernels.
 
 How to turn on 6pack support:
-=============================
+-----------------------------
 
 - In the linux kernel configuration program, select the code maturity level
   options menu and turn on the prompting for development drivers.
-- 
An old man doll... just what I always wanted! - Clara