maint: little curation of metadata in setup.cfg [skip ci]

setup.cfg

@@ -1,13 +1,6 @@
 [metadata]
-url = https://github.com/nipreps/niworkflows
 author = The NiPreps Developers
 author_email = [email protected]
-maintainer = Oscar Esteban
-maintainer_email = [email protected]
-description = NeuroImaging Workflows provides processing tools for magnetic resonance images of the brain.
-long_description = file:README.rst
-long_description_content_type = text/x-rst; charset=UTF-8
-license = 3-clause BSD
 classifiers =
     Development Status :: 4 - Beta
     Intended Audience :: Science/Research
@@ -16,6 +9,15 @@ classifiers =
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
+description = NeuroImaging Workflows provides processing tools for magnetic resonance images of the brain.
+license = 3-clause BSD
+long_description = file:README.rst
+long_description_content_type = text/x-rst; charset=UTF-8
+project_urls =
+    Documentation = https://www.nipreps.org/niworkflows
+    GitHub = https://github.com/nipreps/niworkflows
+    Zenodo = https://doi.org/10.5281/zenodo.2650331
+url = https://github.com/nipreps/niworkflows
 
 [options]
 python_requires = >= 3.6