Update URLs

Author: krassowski

setup.cfg

@@ -3,7 +3,6 @@ name = docstring-to-markdown
 description = On the fly conversion of Python docstrings to markdown
 long_description = file: ./README.md
 long_description_content_type = text/markdown
-url = https://github.com/krassowski/docstring-to-markdown
 author = Michał Krassowski
 author_email = krassowski.michal+pypi@gmail.com
 license =  LGPL-2.1
@@ -16,6 +15,9 @@ classifiers =
     Intended Audience :: Developers
     License :: OSI Approved :: GNU Lesser General Public License v2 or later (LGPLv2+)
     Programming Language :: Python
+project_urls =
+    Bug Tracker = https://github.com/krassowski/docstring-to-markdown/issues
+    Source Code = https://github.com/krassowski/docstring-to-markdown
 
 [options]
 packages = find: