message: Clarify build instructions [CI SKIP]
diff: @@ -45,26 +45,19 @@ Step-by-step build guide:
  1. Clone the repository:
  ```bash
  -$ mkdir adios2
  -$ cd adios2
  $ git clone https://github.com/ornladios/ADIOS2.git
  ```
  2. Create a separate build directory in your work area:
  ```bash
  -$ mkdir build
  +ADIOS2$ mkdir build && cd build
  ```
  3. Configure the project with CMake:
  ```bash
  -$ mkdir adios2
  -$ cd adios2
  -$ git clone https://github.com/ornladios/adios2.git source
  -$ mkdir build
  -$ cd build
  -$ cmake -DCMAKE_INSTALL_PREFIX=/opt/adios2/2.3.1/gnu/openmpi ../source
  +ADIOS2/build$ cmake -DCMAKE_INSTALL_PREFIX=/opt/adios2/2.3.1/gnu/openmpi ../source
  -- The C compiler identification is GNU 7.3.0
  -- The CXX compiler identification is GNU 7.3.0
  ...
  @@ -104,7 +97,7 @@ ADIOS2 build configuration:
  -- Configuring done
  -- Generating done
  --- Build files have been written to: /home/chuck/adios2/build
  +-- Build files have been written to: /home/chuck/ADIOS2/build
  ```
  @@ -137,7 +130,7 @@ In addition to the `ADIOS2_USE_Feature` options, the following options are also
  4. Compile:
  ```bash
  -$ make -j8
  +ADIOS2/build$ make -j8
  ```
  5. Run tests:
  