Fix match_function link syntax in 2.1.0 release notes

[mykhal]

The doc states

… including [match_function](https://github.com/opensearch-project/sql/pull/204], …

instead of

… including match_function, …

[gaiksaya]

Hi @mykhal Thanks for the fix, Can you sign your commit so it passes the DCO check?
Thanks!

[mykhal]

@gaiksaya thanks for noticing, signing fixed.

[codecov-commenter]

Codecov Report

Merging #2385 (9b50278) into main (556defb) will increase coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##               main    #2385   +/-   ##
=========================================
  Coverage     94.61%   94.62%           
  Complexity       27       27           
=========================================
  Files           209      209           
  Lines          4309     4316    +7     
  Branches         29       29           
=========================================
+ Hits           4077     4084    +7     
  Misses          226      226           
  Partials          6        6           

Impacted Files	Coverage Δ
src/manifests_workflow/input_manifests.py	99.04% <0.00%> (+0.06%)	⬆️

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