Update citation for PyNWB to eLife paper

[oruebel]

Motivation

Fix #1605
Fix #1606

• Update the citation for PyNWB to point users to the eLife paper rather than the pre-print.
  • Update citation in the docs
  • Update citation for duecredit
• Fix hardcoded link warnings in the docs build

Checklist

• Did you update CHANGELOG.md with your changes?
• Have you checked our Contributing document?
• Have you ensured the PR clearly describes the problem and the solution?
• Is your contribution compliant with our coding style? This can be checked running flake8 from the source directory.
• Have you checked to ensure that there aren't other open Pull Requests for the same change?
• Have you included the relevant issue number using "Fix #XXX" notation where XXX is the issue number? By including "Fix #XXX" you allow GitHub to close issue #XXX when the PR is merged.

[codecov]

Codecov Report

Merging #1604 (8ce07ea) into dev (03740d0) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##              dev    #1604   +/-   ##
=======================================
  Coverage   91.27%   91.27%           
=======================================
  Files          25       25           
  Lines        2510     2510           
  Branches      474      474           
=======================================
  Hits         2291     2291           
  Misses        139      139           
  Partials       80       80           

Flag	Coverage Δ
integration	70.35% <100.00%> (ø)
unit	84.50% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/pynwb/__init__.py	75.57% <100.00%> (ø)

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[oruebel]

@rly this PR is ready for review

[oruebel]

@rly merging is blocked because of the failing linux-python-3.10 test. However, it looks like this is due to some version conflicts in that test rather than due to changes in this PR. Can you help?

[oruebel]

@rly can you re-approve. I had to resolve merge conflicts in the CHANGELOG to sync with dev