Fix a minor bug that always shows address as used (#927)

In the line 39 of this file, the variable this.used is set as string.
So the conditional in line 85 always returns true and so, any address will be shown as used.

src/cryptoadvance/specter/templates/includes/address-data.html

@@ -35,7 +35,7 @@ <h1>Address details</h1><br>
             this.info = clone.querySelector(".address-data-info");
             this.isVerifyQR = this.getAttribute('data-verify-qr') == 'True';
             this.isVerifyHwi = this.getAttribute('data-verify-hwi') == 'True';
-            this.used = this.getAttribute('data-used');
+            this.used = (this.getAttribute('data-used') == 'true');
             this.utxo = this.getAttribute('data-utxo');
             this.amount = this.getAttribute('data-amount');
             this.amountPrice = this.getAttribute('data-amount-price');