fix(pay): 微信支付key

src/pages/learn/detail.vue

@@ -201,10 +201,10 @@ export default {
       const timeStamp = String(Date.now())
       const paySign = md5
         .hexMD5(
-          `appId=wx4bd80cf10c2a1d14&nonceStr=${data.nonce_str}&package=prepay_id=${data.prepay_id}&signType=MD5&timeStamp=${timeStamp}&key=304b5d1810e481224d4a9199e8ba6c6e`
+          `appId=wx4bd80cf10c2a1d14&nonceStr=${data.nonce_str}&package=prepay_id=${data.prepay_id}&signType=MD5&timeStamp=${timeStamp}&key=weixiuhui20151a2b3c4d5e6f7g8h9ij`
         )
         .toUpperCase()
-
+      
       uni.requestPayment({
         provider: 'wxpay',
         timeStamp: timeStamp,