Documentation: e1000: Use correct heading adornment

Recently documentation file was converted to rst.  The document title
has the incorrect heading adornment.  From kernel docs:

	* Please stick to this order of heading adornments:

	  1. ``=`` with overline for document title::

	       ==============
	       Document title
	       ==============

Add  overline heading adornment to document title.

Fixes commit (228046e76189 Documentation: e1000: Update kernel documentation)

CC: Jeff Kirsher <[email protected]>
Signed-off-by: Tobin C. Harding <[email protected]>
Acked-by: Jeff Kirsher <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

0 files changed, 0 insertions, 0 deletions