[doc] (1.18.2) update doc

Author: vimior

README.md

@@ -42,7 +42,13 @@ xArm Python SDK
 - #### [UFACTORY ModbusTCP Manual](doc/UF_ModbusTCP_Manual.md)
 
 ## Update Summary
-- > ### 1.17.0/1.7.1
+- > ### 1.18.2
+  - Added BytesData for data conversion
+  - Added data structure for report data
+  - Update the reported data for port 30002
+  - Increase execution speed by adding paramster to reduce the number of checks performed by the gripper apis
+
+- > ### 1.17.0/1.17.1
   - Change some API names
 
 - > ### 1.16.0

ReleaseNotes.md

@@ -1,6 +1,11 @@
 # xArm-Python-SDK Release Notes
 
 ## Update Summary
+- > ### 1.18.2
+  - Added BytesData for data conversion
+  - Added data structure for report data
+  - Update the reported data for port 30002
+  - Increase execution speed by adding paramster to reduce the number of checks performed by the gripper apis
 
 - > ### 1.17.0/1.7.1 
   - Change some API names

doc/api/xarm_api.md

@@ -1,4 +1,4 @@
-xArm-Python-SDK API Documentation (V1.18.0): class XArmAPI in module xarm.wrapper.xarm_api
+xArm-Python-SDK API Documentation (V1.18.2): class XArmAPI in module xarm.wrapper.xarm_api
 
 ## class __XArmAPI__
 ****************************************
@@ -2720,7 +2720,7 @@ xArm-Python-SDK API Documentation (V1.18.0): class XArmAPI in module xarm.wrappe
 
 > Set the gripper speed  
 >   
-> :param speed:  
+> :param speed: gripper speed, unit: r/min  
 > :return: code  
 >     code: See the [API Code Documentation](./xarm_api_code.md#api-code) for details.