fix docs

Signed-off-by: guojidan <[email protected]>

Author: guojidan

datafusion-examples/examples/advanced_udwf.rs

@@ -171,7 +171,7 @@ async fn create_context() -> Result<SessionContext> {
 
     // declare a table in memory. In spark API, this corresponds to createDataFrame(...).
     println!("pwd: {}", std::env::current_dir().unwrap().display());
-    let csv_path = "datafusion/core/tests/data/cars.csv".to_string();
+    let csv_path = "../../datafusion/core/tests/data/cars.csv".to_string();
     let read_options = CsvReadOptions::default().has_header(true);
 
     ctx.register_csv("cars", &csv_path, read_options).await?;

datafusion/expr/src/udwf.rs

@@ -302,7 +302,7 @@ pub trait WindowUDFImpl: Debug + Send + Sync {
     /// optimizations manually for specific UDFs.
     ///
     /// Example:
-    /// [`advanced_udwf.rs`]: https://github.com/apache/arrow-datafusion/blob/main/datafusion-examples/examples/advanced_udwf.rs
+    /// [`advanced_udwf.rs`]: <https://github.com/apache/arrow-datafusion/blob/main/datafusion-examples/examples/advanced_udwf.rs>
     ///
     /// # Returns
     /// [`ExprSimplifyResult`] indicating the result of the simplification NOTE