todo comment for GODRIVER-3594

Author: zhouselena

internal/integration/unified/matches.go

@@ -251,6 +251,8 @@ func evaluateSpecialComparison(ctx context.Context, assertionDoc bson.Raw, actua
 
 		// Numeric values can be compared even if their types are different (e.g. if expected is an int32 and actual
 		// is an int64).
+
+		// TODO(GODRIVER-3594): If we decide to add AsDoubleOK() as a method to RawValue, this following conversion should be updated.
 		var expectedF64 float64
 		if assertionVal.Type == bson.TypeDouble {
 			expectedF64 = assertionVal.Double()