Use correct naming for iteration and epoch

resources/js/types/graphs.ts

@@ -34,4 +34,4 @@ export const colors = [
                         ] as const;
 
 export const gridColor = '#444';
-export const gridColorBold = '#999';
+export const gridColorBold = '#999';

resources/js/types/perceptron.ts

@@ -1,7 +1,7 @@
 import type { Point } from "chart.js";
 
 export type Iteration = {
-    iteration: number;
+    epoch: number;
     exampleIndex: number;
     weights: number[][][];
     error: number;
@@ -10,7 +10,8 @@ export type Iteration = {
 export type Dataset = {
     label: string;
     data: DatasetPoint[];
-    defaultLearningRate: number | undefined;
+    defaultLearningRate?: number;
+    defaultMinError?: number;
 };
 
 export type DatasetPoint = {