message: minor revise
diff: @@ -10,7 +10,7 @@ Current supported operations are:
  ADIOS2 enables the use of third-party libraries to execute these tasks.
  -Operators can be attached onto a variable in two modes: private or shared. In most situations, it is recommended to add an operator as a private one, which means it is owned by a certain Variable. A simple example is as follows.
  +Operators can be attached onto a variable in two modes: private or shared. In most situations, it is recommended to add an operator as a private one, which means it is owned by a certain variable. A simple example code is as follows.
  .. code-block:: c++
  