correct the typo from Bragg Refraction to Bragg Reflection
correct the typo from Bragg Refraction to Bragg Reflection

radiasoft/sirepo,radiasoft/sirepo,mkeilman/sirepo,radiasoft/sirepo,radiasoft/sirepo,mkeilman/sirepo,mkeilman/sirepo,mkeilman/sirepo,radiasoft/sirepo