Merge #315: Tiny Code Comment Fix

02c31f5 Small doc fix (Jeremy Rubin)

Pull request description:

ACKs for top commit:
  sanket1729:
    ACK 02c31f5.

Tree-SHA512: a84ac6be027071d698e968487d3467d81bc85dc68f738a6152d67d03bdc4e52e8719e0d9cc86cecb5dd237b803a4c655f793695241a426c13a8cc0ce0980f669

src/psbt/finalizer.rs

@@ -47,7 +47,7 @@ fn construct_tap_witness(
 ) -> Result<Vec<Vec<u8>>, InputError> {
     assert!(spk.is_v1_p2tr());
 
-    // try the script spend path first
+    // try the key spend path first
     if let Some(sig) =
         <PsbtInputSatisfier as Satisfier<XOnlyPublicKey>>::lookup_tap_key_spend_sig(sat)
     {