better comments

corsika/framework/process/NullModel.hpp

@@ -18,7 +18,7 @@ namespace corsika {
      @{
 
      Process that does nothing. It is not even derived from
-     BaseProcess
+     BaseProcess. But it can be added to a ProcessSequence.
    */
 
   class NullModel {
@@ -30,7 +30,7 @@ namespace corsika {
     static bool const is_process_sequence = false;
     static bool const is_switch_process_sequence = false;
 
-    //! Default number of processes is just one, obviously
+    //! Default number of processes is zero, obviously
     static unsigned int constexpr getNumberOfProcesses() { return 0; }
   };
 

corsika/framework/utility/COMBoost.hpp

@@ -25,7 +25,7 @@ namespace corsika {
    **/
 
   /**
-     @class
+     @class COMBoost
      @ingroup Utilities
 
      This utility class handles Lorentz boost between different

corsika/framework/utility/SaveBoostHistogram.hpp

@@ -13,6 +13,7 @@
 namespace corsika {
 
   /**
+   * @file SaveBoostHistogram.hpp
    * @ingroup Utilities
    *
    * This functions saves a boost::histogram into a numpy file. Only rather basic axis