fix typos ...

README.md

@@ -16,7 +16,7 @@ alternating absorber and sensitive layers that can be made of differen - or the
 used to study the effect of the `GFlashHomoShowerParameterisation`. Optionally the `GFlashSamplingShowerParameterisation` is used.
 
 The parameters for the detector geometry (incl. readout cell sizes) are defined in [./include/SimpleCaloConfig.hh](./include/SimpleCaloConfig.hh).
-Also materials and the Gflash parameterisation to be used are defined there. (Recompilation is needed for changes to take effect.
+Also materials and the Gflash parameterisation to be used are defined there. (Recompilation is needed for changes to take effect.)
 
 
 ## Building the example
@@ -44,7 +44,7 @@ where the macro `vis.mac` is executed - or in batch mode running a macro given o
 ../bin/SimpleCalo test.mac
 ```
 
-In `test.mac` you can select the particle type, energy and wether GFlash (`/GFlash/flag 1`) or Geant4 (`/GFlash/flag 0`) are used.
+In `test.mac` you can select the particle type, energy and whether GFlash (`/GFlash/flag 1`) or Geant4 (`/GFlash/flag 0`) are used.
 
 
 ## Output