Update the doxygen documentation

src/elpa.F90

@@ -147,7 +147,7 @@
 !>
 !>  \code{.c}
 !>   #include <elpa/elpa.h>
-!
+!>
 !>   elpa_t handle;
 !>
 !>   if (elpa_init(20170403) != ELPA_OK) {

src/elpa_api.F90

@@ -77,10 +77,9 @@ module elpa_api
     integer(kind=c_int), public, pointer :: nblk => NULL()
 
     contains
-      !> \brief methods available with the elpa_t type
       ! general
-      procedure(elpa_setup_i),   deferred, public :: setup          !< export a setup method
-      procedure(elpa_destroy_i), deferred, public :: destroy        !< export a destroy method
+      procedure(elpa_setup_i),   deferred, public :: setup          !< method to setup an ELPA object
+      procedure(elpa_destroy_i), deferred, public :: destroy        !< method to destroy an ELPA object
 
       ! key/value store
       generic, public :: set => &                                   !< export a method to set integer/double key/values