LNURLw: NFC fix uri prefix (#761)

* fix uri prefix

* prettier

lnbits/extensions/withdraw/static/js/index.js

@@ -249,7 +249,9 @@ new Vue({
           message: 'Tap your NFC tag now to write the LNURLw to it'
         })
 
-        await ndef.write(lnurl)
+        await ndef.write({
+          records: [{recordType: 'url', data: 'lnurlw://' + lnurl, lang: 'en'}]
+        })
 
         this.nfcTagWriting = false
         this.$q.notify({

lnbits/extensions/withdraw/templates/withdraw/display.html

@@ -13,7 +13,8 @@
                 :value="this.here + '/?lightning={{lnurl }}'"
                 :options="{width: 800}"
                 class="rounded-borders"
-              ></qrcode>
+              >
+              </qrcode>
             </q-responsive>
           </a>
         </div>
@@ -61,40 +62,6 @@
         here: location.protocol + '//' + location.host,
         nfcTagWriting: false
       }
-    },
-    methods: {
-      writeNfcTag: async function (lnurl) {
-        try {
-          if (typeof NDEFReader == 'undefined') {
-            throw {
-              toString: function () {
-                return 'NFC not supported on this device and/or browser.'
-              }
-            }
-          }
-
-          const ndef = new NDEFReader()
-
-          this.nfcTagWriting = true
-          this.$q.notify({
-            message: 'Tap your NFC tag now to write the LNURLw to it'
-          })
-
-          await ndef.write(lnurl)
-
-          this.nfcTagWriting = false
-          this.$q.notify({
-            message: 'NFC Tag written successfully!'
-          })
-        } catch (error) {
-          this.nfcTagWriting = false
-          this.$q.notify({
-            message: error
-              ? error.toString()
-              : 'An unexpected error has occurred'
-          })
-        }
-      }
     }
   })
 </script>