Fixed wrapping of text in developer.rst

Author: IanLee1521

docs/developer.rst

@@ -27,7 +27,8 @@ Some high-level aims and directions to bear in mind for contributions:
 
 * ``pycodestyle`` is intended to be as fast as possible.
   Using the ``ast`` module defeats that purpose.
-  The `pep8-naming <https://github.com/flintwork/pep8-naming>`_ plugin exists for this sort of functionality.
+  The `pep8-naming <https://github.com/flintwork/pep8-naming>`_ plugin exists
+  for this sort of functionality.
 * If you want to provide extensibility / plugins,
   please see `flake8 <https://gitlab.com/pycqa/flake8>`_ -
   ``pycodestyle`` doesn't want or need a plugin architecture.