Modify sampling function link issue (#466)

* Modify sampling function link issue

* Modify the master document link

Author: mal117

src/UserGuide/Master/Tree/SQL-Manual/Operator-and-Expression.md

@@ -242,7 +242,7 @@ For details and examples, see the document [Variation Trend Calculation Function
 | EQUAL_SIZE_BUCKET_OUTLIER_SAMPLE | INT32 / INT64 / FLOAT / DOUBLE  | The value range of `proportion` is `(0, 1]`, the default is `0.1`<br> The value of `type` is `avg` or `stendis` or `cos` or `prenextdis`, the default is `avg` <br>The value of `number` should be greater than 0, the default is `3` | INT32 / INT64 / FLOAT / DOUBLE | Returns outlier samples in equal buckets that match the sampling ratio and the number of samples in the bucket |
 | M4                               | INT32 / INT64 / FLOAT / DOUBLE  | Different attributes used by the size window and the time window. The size window uses attributes `windowSize` and `slidingStep`. The time window uses attributes `timeInterval`, `slidingStep`, `displayWindowBegin`, and `displayWindowEnd`. More details see below. | INT32 / INT64 / FLOAT / DOUBLE | Returns the `first, last, bottom, top` points in each sliding window. M4 sorts and deduplicates the aggregated points within the window before outputting them. |
 
-For details and examples, see the document [Sample Functions](../Reference/Function-and-Expression.md#sample-functions).
+For details and examples, see the document [Sample Functions](../SQL-Manual/Function-and-Expression.md#sample-functions).
 
 ### Change Points Function
 

src/UserGuide/latest/SQL-Manual/Operator-and-Expression.md

@@ -242,7 +242,7 @@ For details and examples, see the document [Variation Trend Calculation Function
 | EQUAL_SIZE_BUCKET_OUTLIER_SAMPLE | INT32 / INT64 / FLOAT / DOUBLE  | The value range of `proportion` is `(0, 1]`, the default is `0.1`<br> The value of `type` is `avg` or `stendis` or `cos` or `prenextdis`, the default is `avg` <br>The value of `number` should be greater than 0, the default is `3` | INT32 / INT64 / FLOAT / DOUBLE | Returns outlier samples in equal buckets that match the sampling ratio and the number of samples in the bucket |
 | M4                               | INT32 / INT64 / FLOAT / DOUBLE  | Different attributes used by the size window and the time window. The size window uses attributes `windowSize` and `slidingStep`. The time window uses attributes `timeInterval`, `slidingStep`, `displayWindowBegin`, and `displayWindowEnd`. More details see below. | INT32 / INT64 / FLOAT / DOUBLE | Returns the `first, last, bottom, top` points in each sliding window. M4 sorts and deduplicates the aggregated points within the window before outputting them. |
 
-For details and examples, see the document [Sample Functions](../Reference/Function-and-Expression.md#sample-functions).
+For details and examples, see the document [Sample Functions](../SQL-Manual/Function-and-Expression.md#sample-functions).
 
 ### Change Points Function
 

src/zh/UserGuide/Master/Tree/SQL-Manual/Operator-and-Expression.md

@@ -234,7 +234,7 @@ OR, |, ||
 | EQUAL_SIZE_BUCKET_OUTLIER_SAMPLE   | INT32 / INT64 / FLOAT / DOUBLE | `proportion`取值范围为`(0, 1]`，默认为`0.1`<br>`type`取值为`avg`或`stendis`或`cos`或`prenextdis`，默认为`avg`<br>`number`取值应大于0，默认`3`| INT32 / INT64 / FLOAT / DOUBLE | 返回符合采样比例和桶内采样个数的等分桶离群值采样                |
 | M4     | INT32 / INT64 / FLOAT / DOUBLE | 包含固定点数的窗口和滑动时间窗口使用不同的属性参数。包含固定点数的窗口使用属性`windowSize`和`slidingStep`。滑动时间窗口使用属性`timeInterval`、`slidingStep`、`displayWindowBegin`和`displayWindowEnd`。更多细节见下文。 | INT32 / INT64 / FLOAT / DOUBLE | 返回每个窗口内的第一个点（`first`）、最后一个点（`last`）、最小值点（`bottom`）、最大值点（`top`）。在一个窗口内的聚合点输出之前，M4会将它们按照时间戳递增排序并且去重。 |
 
-详细说明及示例见文档 [采样函数](../Reference/Function-and-Expression.md#采样函数)。
+详细说明及示例见文档 [采样函数](./Function-and-Expression.md#采样函数)。
 ### 时间序列处理函数
 
 | 函数名        | 输入序列类型                   | 参数 | 输出序列类型             | 功能描述                   |

src/zh/UserGuide/latest/SQL-Manual/Operator-and-Expression.md

@@ -234,7 +234,7 @@ OR, |, ||
 | EQUAL_SIZE_BUCKET_OUTLIER_SAMPLE   | INT32 / INT64 / FLOAT / DOUBLE | `proportion`取值范围为`(0, 1]`，默认为`0.1`<br>`type`取值为`avg`或`stendis`或`cos`或`prenextdis`，默认为`avg`<br>`number`取值应大于0，默认`3`| INT32 / INT64 / FLOAT / DOUBLE | 返回符合采样比例和桶内采样个数的等分桶离群值采样                |
 | M4     | INT32 / INT64 / FLOAT / DOUBLE | 包含固定点数的窗口和滑动时间窗口使用不同的属性参数。包含固定点数的窗口使用属性`windowSize`和`slidingStep`。滑动时间窗口使用属性`timeInterval`、`slidingStep`、`displayWindowBegin`和`displayWindowEnd`。更多细节见下文。 | INT32 / INT64 / FLOAT / DOUBLE | 返回每个窗口内的第一个点（`first`）、最后一个点（`last`）、最小值点（`bottom`）、最大值点（`top`）。在一个窗口内的聚合点输出之前，M4会将它们按照时间戳递增排序并且去重。 |
 
-详细说明及示例见文档 [采样函数](../Reference/Function-and-Expression.md#采样函数)。
+详细说明及示例见文档 [采样函数](./Function-and-Expression.md#采样函数)。
 ### 时间序列处理函数
 
 | 函数名        | 输入序列类型                   | 参数 | 输出序列类型             | 功能描述                   |