Update 09.md-

Update to reference Nut 13 we instead of self(nut 9)

09.md

@@ -6,7 +6,7 @@
 
 ---
 
-In this document, we describe how wallets can recover blind signatures, and with that their corresponding `Proofs`, by requesting from the mint to reissue the blind signatures. This can be used for a backup recovery of a lost wallet (see [NUT-09][09]) or for recovering the response of an interrupted swap request (see [NUT-03][03]).
+In this document, we describe how wallets can recover blind signatures, and with that their corresponding `Proofs`, by requesting from the mint to reissue the blind signatures. This can be used for a backup recovery of a lost wallet (see [NUT-13][13]) or for recovering the response of an interrupted swap request (see [NUT-03][03]).
 
 Mints must store the `BlindedMessage` and the corresponding `BlindSignature` in their database every time they issue a `BlindSignature`. Wallets provide the `BlindedMessage` for which they request the `BlindSignature`. Mints only respond with a `BlindSignature`, if they have previously signed the `BlindedMessage`. Each returned `BlindSignature` also contains the `amount` and the keyset `id` (see [NUT-00][00]) which is all the necessary information for a wallet to recover a `Proof`.
 
@@ -43,3 +43,4 @@ The returned arrays `outputs` and `signatures` are of the same length and for ev
 [07]: 07.md
 [09]: 09.md
 [11]: 11.md
+[13]: 13.md