Update nextjs sass broken link

[martinscooper]

Closes #19536

The current link is broken

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.56%. Comparing base (4c395af) to head (fe6076b).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #19537   +/-   ##
=======================================
  Coverage   84.56%   84.56%           
=======================================
  Files         373      373           
  Lines       14662    14662           
  Branches     4848     4848           
=======================================
  Hits        12399    12399           
  Misses       2116     2116           
  Partials      147      147           

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