fix columns function and date_bin function link (apache#838)

Author: leto-bbq

src/UserGuide/Master/Table/SQL-Manual/GroupBy-Clause.md

@@ -267,7 +267,7 @@ It costs 0.081s
 ```
 
 
-For more details on the `date_bin` function, refer to the **Definition of Date Bin (Time Bucketing)** feature documentation.
+For more details on the `date_bin` function, refer to the **[Definition of Date Bin (Time Bucketing)](../SQL-Manual/Featured-Functions.md#_1-1-date-bin-function)** feature documentation.
 
 #### Example 2: Query the Latest Data Point for Each Device
 

src/UserGuide/Master/Table/SQL-Manual/Select-Clause.md

@@ -274,7 +274,7 @@ Total line number = 18
 It costs 0.189s
 ```
 
-### 3.2 Colums Function
+### 3.2 Columns Function
 
 1. Without combining expressions
 ```sql

src/UserGuide/latest-Table/SQL-Manual/GroupBy-Clause.md

@@ -267,7 +267,7 @@ It costs 0.081s
 ```
 
 
-For more details on the `date_bin` function, refer to the **Definition of Date Bin (Time Bucketing)** feature documentation.
+For more details on the `date_bin` function, refer to the **[Definition of Date Bin (Time Bucketing)](../SQL-Manual/Featured-Functions.md#_1-1-date-bin-function)** feature documentation.
 
 #### Example 2: Query the Latest Data Point for Each Device
 

src/UserGuide/latest-Table/SQL-Manual/Select-Clause.md

@@ -274,7 +274,7 @@ Total line number = 18
 It costs 0.189s
 ```
 
-### 3.2 Colums Function
+### 3.2 Columns Function
 
 1. Without combining expressions
 ```sql

src/zh/UserGuide/Master/Table/SQL-Manual/GroupBy-Clause.md

@@ -250,7 +250,7 @@ Total line number = 8
 It costs 0.081s
 ```
 
-有关date_bin函数的更多详细信息可以参见 date_bin （时间分桶规整）函数功能定义
+有关date_bin函数的更多详细信息可以参见 [date_bin （时间分桶规整）函数](../SQL-Manual/Featured-Functions.md#_1-1-降采样函数)功能定义
 
 #### 示例 2：查询每个设备的最新数据点
 

src/zh/UserGuide/Master/Table/SQL-Manual/Select-Clause.md

@@ -267,7 +267,7 @@ Total line number = 18
 It costs 0.189s
 ```
 
-### 3.2 Colums 函数
+### 3.2 Columns 函数
 
 1. 不结合表达式
 ```sql

src/zh/UserGuide/latest-Table/SQL-Manual/GroupBy-Clause.md

@@ -250,7 +250,7 @@ Total line number = 8
 It costs 0.081s
 ```
 
-有关date_bin函数的更多详细信息可以参见 date_bin （时间分桶规整）函数功能定义
+有关date_bin函数的更多详细信息可以参见 [date_bin （时间分桶规整）函数](../SQL-Manual/Featured-Functions.md#_1-1-降采样函数)功能定义
 
 #### 示例 2：查询每个设备的最新数据点
 

src/zh/UserGuide/latest-Table/SQL-Manual/Select-Clause.md

@@ -267,7 +267,7 @@ Total line number = 18
 It costs 0.189s
 ```
 
-### 3.2 Colums 函数
+### 3.2 Columns 函数
 
 1. 不结合表达式
 ```sql