fix: 修改渐变方案Demo

Author: soulhat

components/button/bg.tsx

@@ -52,7 +52,7 @@ import { isLinearGradient, getLinearParam } from '../utils/color';
 import {
   default as RNLinearGradient,
   LinearGradient,
-} from 'react-native-linear-gradient';
+} from 'expo-linear-gradient';
 
 // 位置坐标
 type Pos = {

components/notify/bg.tsx

@@ -52,7 +52,7 @@ import { isLinearGradient, getLinearParam } from '../utils/color';
 import {
   default as RNLinearGradient,
   LinearGradient,
-} from 'react-native-linear-gradient';
+} from 'expo-linear-gradient';
 
 // 位置坐标
 type Pos = {