Fix javadoc after daf131b

Author: tzolov

vector-stores/spring-ai-cassandra/src/main/java/org/springframework/ai/vectorstore/CassandraVectorStoreConfig.java

@@ -260,7 +260,9 @@ public Builder withClusteringKeys(List<SchemaColumn> clusteringKeys) {
 			return this;
 		}
 
-		/** defaults (if null) to '<table_name>_<embedding_column_name>_idx' **/
+		/**
+		 * defaults (if null) to '&lt;table_name&gt;_&lt;embedding_column_name&gt;_idx'
+		 **/
 		@Nullable
 		public Builder withIndexName(String name) {
 			this.indexName = name;