Fix misspell

internal/matchers/signature.go

@@ -118,7 +118,7 @@ func (xSig xmlSig) detect(in []byte) bool {
 	return localNameIndex != -1 && localNameIndex < bytes.Index(in, xSig.xmlns)
 }
 
-// detect returns true if any of the provided singatures pass for in input.
+// detect returns true if any of the provided signatures pass for in input.
 func detect(in []byte, sigs []sig) bool {
 	for _, sig := range sigs {
 		if sig.detect(in) {