tree data UPDATE support for milti-target leafref links (#2161)

* Adding support for multiple leafref target nodes
diff --git a/src/tree_data_internal.h b/src/tree_data_internal.h
index d639591..4df6d60 100644
--- a/src/tree_data_internal.h
+++ b/src/tree_data_internal.h
@@ -617,7 +617,7 @@
 LY_ERR lyd_get_or_create_leafref_links_record(const struct lyd_node_term *node, struct lyd_leafref_links_rec **record, ly_bool create);
 
 /**
- * @brief Adds links between leafref adn data node.
+ * @brief Adds links between leafref and data node.
  *
  * If the links were already added, it will not be added again.
  * This API requires usage of LY_CTX_LEAFREF_LINKING context flag.
@@ -630,7 +630,7 @@
 LY_ERR lyd_link_leafref_node(const struct lyd_node_term *node, const struct lyd_node_term *leafref_node);
 
 /**
- * @brief Removes links between leafref adn data node.
+ * @brief Removes links between leafref and data node.
  *
  * If the links were never added, it will be silently ignored.
  * This API requires usage of LY_CTX_LEAFREF_LINKING context flag.