[BUG] make htmldocs failed with error after add converted RST file.

[Masanari Iida]

After merger a patch,  make htmldocs  and make xmldocs
failed with error.

reST markup error:
/home/iida/Repo/linux-2.6/Documentation/networking/e100.rst:90:
(SEVERE/4) Unexpected section title.

Configuring the Driver on Different Distributions
-------------------------------------------------
Documentation/Makefile:68: recipe for target 'htmldocs' failed
make[1]: *** [htmldocs] Error 1
Makefile:1542: recipe for target 'htmldocs' failed
make: *** [htmldocs] Error 2


85d63445f41125dafeddda74e5b13b7eefac9407 is the first bad commit
commit 85d63445f41125dafeddda74e5b13b7eefac9407
Author: Jeff Kirsher <jeffrey.t.kirsher@xxxxxxxxx>
Date:   Thu May 10 12:20:13 2018 -0700

    Documentation: e100: Update the Intel 10/100 driver doc


Reported-by: Masanari Iida <standby24x7@xxxxxxxxx>

Masanari Iida