修正代码中的注释错误

tem3dfdtd/lib/GetSourcePosition.f90

@@ -1,6 +1,6 @@
-!Copyright (c) 2013 by tdem.org under guide of Xiu Li(lixiu@chd.edu.cn)
-!written by Huaifeng Sun(sunhuaifeng@gmail.com) and Xushan Lu(luxushan@gmail.com)
-!Code distribution @ tdem.org or sunhuaifeng.com
+!Copyright (c) 2013 by https://git.em3d.cn/ under guide of Xiu Li(lixiu@chd.edu.cn)
+!written by Huaifeng Sun(sunhuaifeng@email.sdu.edu.cn) and Xushan Lu(luxushan@gmail.com)
+!Code distribution @ https://git.em3d.cn/
     
 subroutine GetSourcePosition
   ! This subroutine initialize the value of array is_ex_in_source which is used when judging whether the grid contains the source