docs: fix broken SearchCriteria reference link

The FILTER-SEARCH-RESULTS.md file referenced a non-existent
SEARCH-CRITERIA.md file. Updated the link to point to the correct
section in LIBRARY-API.md where SearchCriteria is documented.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: Copilot

docs/how-to/FILTER-SEARCH-RESULTS.md

@@ -225,5 +225,5 @@ for group in &groups {
 
 - [How to Compare Animals](COMPARE-ANIMALS.md) -- compare filtered candidates
 - [How to Export JSON](EXPORT-JSON.md) -- export filtered results
-- [SearchCriteria Reference](../reference/SEARCH-CRITERIA.md)
+- [SearchCriteria Reference](../reference/LIBRARY-API.md#searchcriteria)
 - [EBV Trait Glossary](../MCP.md#ebv-trait-glossary)