update apitester to only retrieve top result for llm_similar to make results deterministic

Author: jamesamcl

apitester4/src/main/java/uk/ac/ebi/ols/apitester/Ols4ApiTester.java

@@ -212,7 +212,7 @@ public boolean testOntology(String ontologyId) throws IOException{
 				write(outDir + "/v2/ontologies/" + ontologyId + "/classes/" + doubleEncodedIri + ".json", classJson);
 
 				if(ontologyId.equals("duo")) {
-					JsonElement llmSimilarJson = get(url + "/api/v2/classes/" + doubleEncodedIri + "/llm_similar?model=mock");
+					JsonElement llmSimilarJson = get(url + "/api/v2/classes/" + doubleEncodedIri + "/llm_similar?model=mock&size=1");
 					write(outDir + "/v2/classes/" + doubleEncodedIri + "/llm_similar.json", llmSimilarJson);
 
 					JsonElement llmEmbeddingJson = get(url + "/api/v2/classes/" + doubleEncodedIri + "/llm_embedding?model=mock");