Re-translate the Japanese version (#1871)

* Retranslate Japanese docs with GPT-5.4

* Retranslate Japanese code with GPT-5.4

ja/codes/go/chapter_greedy/max_capacity_test.go

@@ -0,0 +1,18 @@
+// File: max_capacity_test.go
+// Created Time: 2023-07-23
+// Author: Reanon (793584285@qq.com)
+
+package chapter_greedy
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestMaxCapacity(t *testing.T) {
+	ht := []int{3, 8, 5, 2, 7, 7, 3, 4}
+
+	// 貪欲法
+	res := maxCapacity(ht)
+	fmt.Println("最大容量は", res)
+}