Small formatting fixes (#4071)

Author: stinodego

nodejs-polars/src/lazy/dataframe.rs

@@ -280,7 +280,7 @@ impl JsLazyFrame {
         let strategy = match strategy.as_ref() {
             "forward" => AsofStrategy::Forward,
             "backward" => AsofStrategy::Backward,
-            _ => panic!("expected on of {{'forward', 'backward'}}"),
+            _ => panic!("expected one of {{'forward', 'backward'}}"),
         };
 
         let ldf = self.ldf.clone();