[MRG] Fix reference numbers

[eloitanguy]

Types of changes

The references added in #767 had incorrect numbers, this PR fixes this issue.

Motivation and context / Related issue

How has this been tested (if it applies)

PR checklist

• I have read the CONTRIBUTING document.
• The documentation is up-to-date with the changes I made (check build artifacts).
• All tests passed, and additional code has been covered with new tests.
• I have added the PR and Issue fix to the RELEASES.md file.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.81%. Comparing base (bd214c8) to head (93697cb).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #819   +/-   ##
=======================================
  Coverage   96.81%   96.81%           
=======================================
  Files         124      124           
  Lines       24263    24263           
=======================================
  Hits        23490    23490           
  Misses        773      773           

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