Clarify parameter descriptions

Author: ishii-norimi

lib/model/nns/graph.js

@@ -17,7 +17,7 @@ class Node {
 	/**
 	 * @param {string} name Name of this node
 	 * @param {PlainLayerObject} layer Layer
-	 * @param {(string | number)[]} input Input node names	 * @param {string[]} input Input node names
+	 * @param {(string | number)[]} input Input node names
 	 * @param {{index: number, subscript: number | null}[]} parent Parent node informations
 	 * @param {ComputationalGraph} graph graph
 	 */
@@ -229,7 +229,7 @@ export default class ComputationalGraph {
 	 * Add a layer.
 	 * @param {Layer | PlainLayerObject} layer Added layer
 	 * @param {string} [name] Node name
-	 * @param {(string | number)[] | string | number} [inputs] Input node names for the added layer
+	 * @param {(string | number)[] | string | number} [inputs] Input node names or const value for the added layer
 	 */
 	add(layer, name, inputs = undefined) {
 		this._order = null