DOC: Improve the "Recognizing contributions" section

Improve the "Recognizing contributions" section:
- Keep the mentions to the `.zenodo.json` and updating script file
  generic and provide specific examples.
- Refer to the new `.maint/update_authors.py` script instead of the
  old `.maintenance/update_zenodo.py` script.

Author: jhlegarreta

Diff for: docs/community/CONTRIBUTING.md

@@ -289,11 +289,14 @@ myworkflow_rh_wf = init_workflow_wf(name='myworkflow_rh_wf')
 
 We welcome and recognize all contributions regardless their size, content or scope:
 from documentation to testing and code development.
-You can see a list of current developers and contributors in our [zenodo file][link_zenodo].
-Before every release, a new [zenodo file][link_zenodo] will be generated.
-The [update script][link_update_script] will also sort creators and contributors by
-the relative size of their contributions, as provided by the `git-line-summary` utility
-distributed with the `git-extras` package.
+You can see a list of current developers and contributors in the `.zenodo.json` file
+of the corresponding repository. See [zenodo file][link_zenodo] for an example.
+Before every release, a new `.zenodo.json` will be generated through the
+`.maint/update_authors.py` script that dwells in the repository at issue.
+The script will also sort creators and contributors by the relative size of their
+contributions, as provided by the `git-line-summary` utility distributed with the
+`git-extras` package. See [update script][link_update_script] for
+an example of the script.
 Last positions in both the *creators* and *contributors* list will be reserved to
 the project leaders.
 These special positions can be revised to add names by punctual request and revised for
@@ -373,7 +376,7 @@ You're awesome. :wave::smiley:
 [link_updateupstreamwiki]: https://help.github.com/articles/syncing-a-fork/
 [link_stemmrolemodels]: https://github.com/KirstieJane/STEMMRoleModels
 [link_zenodo]: https://github.com/nipreps/fmriprep/blob/master/.zenodo.json
-[link_update_script]: https://github.com/nipreps/fmriprep/blob/master/.maintenance/update_zenodo.py
+[link_update_script]: https://github.com/nipreps/fmriprep/blob/master/.maint/update_authors.py
 [link_devel]: https://fmriprep.readthedocs.io/en/latest/contributors.html
 [link_fmriprep]: http://fmriprep.org
 [link_bidsapps]: https://bids-apps.neuroimaging.io