fix: update readme

src/views/Options/Apis.js

@@ -803,6 +803,8 @@ export default function Apis() {
           {i18n("about_api")}
           <br />
           {i18n("about_api_2")}
+          <br />
+          {i18n("about_api_3")}
         </Alert>
 
         <Box>

src/views/Options/Setting.js

@@ -8,6 +8,7 @@ import { useI18n } from "../../hooks/I18n";
 import { useAlert } from "../../hooks/Alert";
 import { isExt } from "../../libs/client";
 import Grid from "@mui/material/Grid";
+import Alert from "@mui/material/Alert";
 import {
   UI_LANGS,
   TRANS_NEWLINE_LENGTH,
@@ -110,6 +111,8 @@ export default function Settings() {
   return (
     <Box>
       <Stack spacing={3}>
+        <Alert severity="info">{i18n("setting_helper")}</Alert>
+
         <Stack
           direction="row"
           alignItems="center"

src/views/Options/Subtitle.js

@@ -44,6 +44,8 @@ export default function SubtitleSetting() {
           {i18n("subtitle_helper_1")}
           <br />
           {i18n("subtitle_helper_2")}
+          <br />
+          {i18n("subtitle_helper_3")}
         </Alert>
 
         <FormControlLabel