fix zap missing event tag

Author: pablof7z

ndk/src/events/kinds/nutzap/index.ts

@@ -139,7 +139,7 @@ export class NDKNutzap extends NDKEvent {
         this.tags = this.tags.filter((t) => t[0] !== "p");
 
         if (target instanceof NDKEvent) {
-            this.tags.push();
+            this.tags.push(target.tagReference());
         }
     }
 

ndk/src/zapper/index.ts

@@ -270,6 +270,7 @@ class NDKZapper extends EventEmitter<{
             nutzap.tags = [...nutzap.tags, ...(this.tags || [])];
             nutzap.proofs = proofs;
             nutzap.mint = mint;
+            nutzap.target = this.target;
             nutzap.comment = this.comment;
             nutzap.unit = this.unit;
             nutzap.recipientPubkey = split.pubkey;