Add decision about headers to dev docs

doc/development/development.rst

@@ -192,6 +192,11 @@ Miscelleaneous Stylistic Conventions
 #. Avoid using abreviations in variable names (e.g., use :code:`recording` instead of :code:`rec`). It is especially important to avoid single letter variables.
 #. Use index as singular and indices for plural following the NumPy convention. Avoid idx or indexes. Plus, id and ids are reserved for identifiers (i.e. channel_ids)
 #. We use file_path and folder_path (instead of file_name and folder_name) for clarity.
+#. For creating headers to divide section of codes we use the following convention (see issue `#3019 <https://github.com/SpikeInterface/spikeinterface/issues/3019>`_):
+
+#########################################
+# A header
+#########################################
 
 
 How to build the documentation