[FLINK-26395][docs] Correct the wrong description of SQL function: RAND_INTEGER. This fixes apache#19104

Author: huwh

docs/data/sql_functions.yml

@@ -221,10 +221,10 @@ arithmetic:
     description: Returns a pseudorandom double value in the range [0.0, 1.0) with an initial seed integer. Two RAND functions will return identical sequences of numbers if they have the same initial seed.
   - sql: RAND_INTEGER(INT)
     table: randInteger(INT)
-    description: Returns a pseudorandom double value in the range [0.0, INT)
+    description: Returns a pseudorandom integer value in the range [0, INT)
   - sql: RAND_INTEGER(INT1, INT2)
     table: randInteger(INT1, INT2)
-    description: Returns a pseudorandom double value in the range [0.0, INT2) with an initial seed INT1. Two RAND_INTGER functions will return idential sequences of numbers if they have the same initial seed and bound.
+    description: Returns a pseudorandom integer value in the range [0, INT2) with an initial seed INT1. Two RAND_INTGER functions will return idential sequences of numbers if they have the same initial seed and bound.
   - sql: UUID()
     table: uuid()
     description: Returns an UUID (Universally Unique Identifier) string (e.g., "3d3c68f7-f608-473f-b60c-b0c44ad4cc4e") according to RFC 4122 type 4 (pseudo randomly generated) UUID. The UUID is generated using a cryptographically strong pseudo random number generator.

docs/data/sql_functions_zh.yml

@@ -271,11 +271,11 @@ arithmetic:
       如果两个 RAND 函数具有相同的初始种子，它们将返回相同的数字序列。
   - sql: RAND_INTEGER(INT)
     table: randInteger(INT)
-    description: 返回 [0.0, INT) 范围内的伪随机双精度值。
+    description: 返回 [0, INT) 范围内的伪随机整数。
   - sql: RAND_INTEGER(INT1, INT2)
     table: randInteger(INT1, INT2)
     description: |
-      返回范围为 [0.0, INT2) 的伪随机双精度值，初始种子为 INT1。
+      返回范围为 [0, INT2) 的伪随机整数，初始种子为 INT1。
       如果两个 RAND_INTGER 函数具有相同的初始种子和边界，它们将返回相同的数字序列。
   - sql: UUID()
     table: uuid()

flink-python/pyflink/table/expressions.py

@@ -438,7 +438,7 @@ def rand(seed: Union[int, Expression[int]] = None) -> Expression[float]:
 def rand_integer(bound: Union[int, Expression[int]],
                  seed: Union[int, Expression[int]] = None) -> Expression:
     """
-    Returns a pseudorandom integer value between 0.0 (inclusive) and the specified value
+    Returns a pseudorandom integer value between 0 (inclusive) and the specified value
     (exclusive) with a initial seed if specified. Two rand_integer() functions will return
     identical sequences of numbers if they have same initial seed and same bound.
     """

flink-table/flink-table-api-java/src/main/java/org/apache/flink/table/api/Expressions.java

@@ -444,15 +444,15 @@ public static ApiExpression rand(Object seed) {
     }
 
     /**
-     * Returns a pseudorandom integer value between 0.0 (inclusive) and the specified value
+     * Returns a pseudorandom integer value between 0 (inclusive) and the specified value
      * (exclusive).
      */
     public static ApiExpression randInteger(Object bound) {
         return apiCall(BuiltInFunctionDefinitions.RAND_INTEGER, objectToExpression(bound));
     }
 
     /**
-     * Returns a pseudorandom integer value between 0.0 (inclusive) and the specified value
+     * Returns a pseudorandom integer value between 0 (inclusive) and the specified value
      * (exclusive) with a initial seed. Two randInteger() functions will return identical sequences
      * of numbers if they have same initial seed and same bound.
      */