Fix documentation build failure due to PR #1823

[atharva-2001]

This PR changes the convergence plots notebook corresponding to the changes done in PR #1823.

Description

Motivation and context

The documentation build pipeline is failing.

How has this been tested?

• Testing pipeline.
• Other.

Examples

Link to the documentation: https://atharva-2001.github.io/tardis/branch/fix_docs_cplots/io/visualization/convergence_plot.html

Type of change

• Bug fix.
• New feature.
• Breaking change.
• None of the above.

Checklist

• My change requires a change to the documentation.
  • I have updated the documentation accordingly.
  • (optional) I have built the documentation on my fork following the instructions.
• I have assigned and requested two reviewers for this pull request.

[review-notebook-app]

Check out this pull request on 

See visual diffs & provide feedback on Jupyter Notebooks.

---

Powered by ReviewNB

[tardis-bot]

Before a pull request is accepted, it must meet the following criteria:

• Is the necessary information provided?
• Is this a duplicate PR?
  • If a new PR is clearly a duplicate, ask how this PR is different from the original PR?
  • If this PR is about to be merged, close the original PR with a link to this new PR that solved the issue.
• Does it pass existing tests and are new tests provided if required?
  • The test coverage should not decrease, and for new features should be close to 100%.
• Is the code tidy?
  • No unnecessary print lines or code comments.

[codecov]

Codecov Report

Merging #1918 (6dc0c71) into master (7ccabdc) will not change coverage.
The diff coverage is n/a.

❗ Current head 6dc0c71 differs from pull request most recent head 0c546b8. Consider uploading reports for the commit 0c546b8 to get more accurate results

@@           Coverage Diff           @@
##           master    #1918   +/-   ##
=======================================
  Coverage   59.04%   59.04%           
=======================================
  Files          70       70           
  Lines        7767     7767           
=======================================
  Hits         4586     4586           
  Misses       3181     3181           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 7ccabdc...0c546b8. Read the comment docs.