Fix typo: HSNW → HNSW

Fixes #4991

Signed-off-by: lance <leehaut@gmail.com>
(cherry picked from commit 186808d)

Author: leehaut

vector-stores/spring-ai-redis-store/src/main/java/org/springframework/ai/vectorstore/redis/RedisVectorStore.java

@@ -189,7 +189,7 @@ public class RedisVectorStore extends AbstractObservationVectorStore implements
 
 	public static final String DEFAULT_PREFIX = "embedding:";
 
-	public static final Algorithm DEFAULT_VECTOR_ALGORITHM = Algorithm.HSNW;
+	public static final Algorithm DEFAULT_VECTOR_ALGORITHM = Algorithm.HNSW;
 
 	public static final String DISTANCE_FIELD_NAME = "vector_score";
 
@@ -443,7 +443,7 @@ private SchemaField schemaField(MetadataField field) {
 	}
 
 	private VectorAlgorithm vectorAlgorithm() {
-		if (this.vectorAlgorithm == Algorithm.HSNW) {
+		if (this.vectorAlgorithm == Algorithm.HNSW) {
 			return VectorAlgorithm.HNSW;
 		}
 		return VectorAlgorithm.FLAT;
@@ -477,7 +477,7 @@ public static Builder builder(JedisPooled jedis, EmbeddingModel embeddingModel)
 
 	public enum Algorithm {
 
-		FLAT, HSNW
+		FLAT, HNSW
 
 	}