Update HMCLauncher (#2264)

* 更新 lang.h

* 更新 main.cpp

* 更新 HMCLauncher.sh

HMCLauncher/HMCL/lang.h

@@ -6,7 +6,9 @@
 
 #define ERROR_PROMPT L"The Java runtime environment is required to run HMCL and Minecraft,\n"\
                      L"Click 'OK' to start downloading java.\n"\
-                     L"Please restart HMCL after installing Java."
+                     L"Please restart HMCL after installing Java.\n"\
+                     L"Click 'Help' go for help."
 
 #define ERROR_PROMPT_ZH L"运行 HMCL 以及 Minecraft 需要 Java 运行时环境，点击“确定”开始下载。\n"\
-                        L"请在安装 Java 完成后重新启动 HMCL。"
+                        L"请在安装 Java 完成后重新启动 HMCL。\n"\
+                        L"点击“帮助”寻求帮助。"

HMCLauncher/HMCL/main.cpp

@@ -3,6 +3,7 @@
 #include "os.h"
 #include "java.h"
 #include "lang.h"
+#include <windows.h>
 
 Version J8(TEXT("8"));
 
@@ -49,6 +50,10 @@ void FindJavaInDirAndLaunchJVM(const std::wstring &baseDir, const std::wstring &
   }
 }
 
+void OpenHelpPage() {
+    ShellExecute(0, 0, L"https://docs.hmcl.net/help.html", 0, 0, SW_SHOW);
+}
+
 int APIENTRY wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
                       LPWSTR lpCmdLine, int nCmdShow) {
   std::wstring path, exeName, jvmOptions;