Fix header level for foreign-libraries section

[ci skip]

Fix header level for foreign-libraries section
[ci skip]
eea04e3f · John Ericson · 938e80bd · eea04e3f
Commit eea04e3f authored Feb 12, 2017 by John Ericson
--- a/Cabal/doc/developing-packages.rst
+++ b/Cabal/doc/developing-packages.rst
@@ -1510,7 +1510,7 @@ See the output of ``cabal help bench`` for a list of options you can
 pass to ``cabal bench``.

 Foreign libraries
-"""""""""""""""""
+^^^^^^^^^^^^^^^^^

 Foreign libraries are system libraries intended to be linked against
 programs written in C or other "foreign" languages. They