[fix] update url and doc

Author: vimior

doc/api/xarm_api.md

@@ -1,4 +1,4 @@
-xArm-Python-SDK API Documentation (V1.15.1): class XArmAPI in module xarm.wrapper.xarm_api
+xArm-Python-SDK API Documentation (V1.15.2): class XArmAPI in module xarm.wrapper.xarm_api
 
 ## class __XArmAPI__
 ****************************************

pyproject.toml

@@ -46,6 +46,6 @@ classifiers = [
 
 [project.urls]
 Homepage = "https://www.ufactory.cc"
-Documentation = "https://github.com/xArm-Developer/xArm-Python-SDK/doc/api/xarm_api.md"
+Documentation = "https://github.com/xArm-Developer/xArm-Python-SDK/blob/master/doc/api/xarm_api.md"
 Repository = "https://github.com/xArm-Developer/xArm-Python-SDK.git"
 Issues = "https://github.com/xArm-Developer/xArm-Python-SDK/issues"