Update centos-art.sh scripts.
    
    - Previously, the --version option printed version about centos-art.sh
      script in the form NAME vM.N. This commit removes the letter v from
      printed line.
    
    - Previsouly, the --help option looked up module's documentation using
      the centos-art.sh-${MODULE_NAME} file name inside the script manuals
      base directory. This is, outside module-specific directory
      structures. This commit updates the tcar_printVersion function to
      reflect the fact that module-specific documentation manuals must be
      inside module-specific directory structures.