[FLINK-33117][docs] Fix scala example for NamedParameterClass

Author: snuyanzin

docs/content.zh/docs/dev/table/functions/udfs.md

@@ -635,13 +635,14 @@ public static class NamedParameterClass extends ScalarFunction {
 {{< tab "Scala" >}}
 ```scala
 import org.apache.flink.table.annotation.ArgumentHint;
+import org.apache.flink.table.annotation.DataTypeHint;
 import org.apache.flink.table.functions.ScalarFunction;
 
 class NamedParameterClass extends ScalarFunction {
 
   // 使用 @ArgumentHint 注解指定参数的名称，参数类型，以及是否是必需的参数
-  def eval(@ArgumentHint(name = "param1", isOptional = false, `type` = @DataTypeHint("STRING")) s1: String,
-          @ArgumentHint(name = "param2", isOptional = true, `type` = @DataTypeHint("INTEGER")) s2: Integer) = {
+  def eval(@ArgumentHint(name = "param1", isOptional = false, `type` = new DataTypeHint("STRING")) s1: String,
+          @ArgumentHint(name = "param2", isOptional = true, `type` = new DataTypeHint("INTEGER")) s2: Integer) = {
     s1 + ", " + s2
   }
 }
@@ -655,6 +656,8 @@ class NamedParameterClass extends ScalarFunction {
 {{< tab "Java" >}}
 ```java
 import org.apache.flink.table.annotation.ArgumentHint;
+import org.apache.flink.table.annotation.DataTypeHint;
+import org.apache.flink.table.annotation.FunctionHint;
 import org.apache.flink.table.functions.ScalarFunction;
 
 public static class NamedParameterClass extends ScalarFunction {
@@ -675,6 +678,8 @@ public static class NamedParameterClass extends ScalarFunction {
 {{< tab "Scala" >}}
 ```scala
 import org.apache.flink.table.annotation.ArgumentHint;
+import org.apache.flink.table.annotation.DataTypeHint;
+import org.apache.flink.table.annotation.FunctionHint;
 import org.apache.flink.table.functions.ScalarFunction;
 
 class NamedParameterClass extends ScalarFunction {

docs/content/docs/dev/table/functions/udfs.md

@@ -645,13 +645,14 @@ public static class NamedParameterClass extends ScalarFunction {
 {{< tab "Scala" >}}
 ```scala
 import org.apache.flink.table.annotation.ArgumentHint;
+import org.apache.flink.table.annotation.DataTypeHint;
 import org.apache.flink.table.functions.ScalarFunction;
 
 class NamedParameterClass extends ScalarFunction {
 
   // Use the @ArgumentHint annotation to specify the name, type, and whether a parameter is required.
-  def eval(@ArgumentHint(name = "param1", isOptional = false, `type` = @DataTypeHint("STRING")) s1: String,
-          @ArgumentHint(name = "param2", isOptional = true, `type` = @DataTypeHint("INTEGER")) s2: Integer) = {
+  def eval(@ArgumentHint(name = "param1", isOptional = false, `type` = new DataTypeHint("STRING")) s1: String,
+  @ArgumentHint(name = "param2", isOptional = true, `type` = new DataTypeHint("INTEGER")) s2: Integer) = {
     s1 + ", " + s2
   }
 }
@@ -673,7 +674,7 @@ public static class NamedParameterClass extends ScalarFunction {
   @FunctionHint(
     arguments = {
       @ArgumentHint(name = "param1", isOptional = false, type = @DataTypeHint("STRING")),
-      @ArgumentHint(name = "param2", isOptional = true, type = @DataTypeHint("INTEGER"))
+     @ArgumentHint(name = "param2", isOptional = true, type = @DataTypeHint("INTEGER"))
     }
   )
   public String eval(String s1, Integer s2) {
@@ -685,6 +686,8 @@ public static class NamedParameterClass extends ScalarFunction {
 {{< tab "Scala" >}}
 ```scala
 import org.apache.flink.table.annotation.ArgumentHint;
+import org.apache.flink.table.annotation.DataTypeHint;
+import org.apache.flink.table.annotation.FunctionHint;
 import org.apache.flink.table.functions.ScalarFunction;
 
 class NamedParameterClass extends ScalarFunction {
@@ -710,6 +713,8 @@ class NamedParameterClass extends ScalarFunction {
 {{< tab "Java" >}}
 ```java
 import org.apache.flink.table.annotation.ArgumentHint;
+import org.apache.flink.table.annotation.DataTypeHint;
+import org.apache.flink.table.annotation.FunctionHint;
 import org.apache.flink.table.functions.ScalarFunction;
 
 // Use the @ArgumentHint annotation to specify the name, type, and whether a parameter is required.
@@ -730,6 +735,8 @@ public static class NamedParameterClass extends ScalarFunction {
 {{< tab "Scala" >}}
 ```scala
 import org.apache.flink.table.annotation.ArgumentHint;
+import org.apache.flink.table.annotation.DataTypeHint;
+import org.apache.flink.table.annotation.FunctionHint;
 import org.apache.flink.table.functions.ScalarFunction;
 
 // Use the @ArgumentHint annotation to specify the name, type, and whether a parameter is required.