Fix RST markup

This was formatted as markdown while this is a .rst

CHANGELOG.rst

@@ -6,17 +6,20 @@ This document describes changes between each past release.
 2.0 (unreleased)
 ----------------
 
-### Breaking changes
+Breaking changes
+================
 
 - ``ADMIN_PASSWORD`` is now hashed rather than plain text. The ``ihatemoney generate_password_hash`` command can now be used to generate a proper password HASH (#236)
 - Turn the WSGI file into a python module, renamed from budget/ihatemoney.wsgi to ihatemoney/wsgi.py. Please update your Apache configuration!
 - Admin privileges are now required to access the dashboard
 
-### Changed
+Changed
+=======
 
 - Changed the recommended gunicorn configuration to use the wsgi module as an entrypoint
 
-### Added
+Added
+=====
 
 - Add a statistics tab (#257)
 - Add python3.6 support (#259)
@@ -26,14 +29,16 @@ This document describes changes between each past release.
 - The dashboard can now be deactivated using the ACTIVATE_ADMIN_DASHBOARD setting.
 - When activated, a link to the dashboard appears in the navigation bar.
 
-### Removed
+Removed
+=======
 
 - Remove unused option in the setup script
 
 1.0 (2017-06-20)
 ----------------
 
-### Added
+Added
+=====
 
 - Apache WSGI Support (#191)
 - Brush up the Makefile (#207, #201)
@@ -42,13 +47,15 @@ This document describes changes between each past release.
 - Project creation can be restricted to admin (#210)
 - More responsive layout (#213)
 
-### Changed
+Changed
+=======
 
 - Some README enhancements
 - Move tests to budget.tests (#205)
 - The demo project can be disabled (#209)
 
-### Fixed
+Fixed
+=====
 
 - Fix sphinx integration (#208)