Updated typo in README
Updated typo in README

chaitu2289/xray_scattering,chaitu2289/xray_scattering,chaitu2289/xray_scattering,chaitu2289/xray_scattering,dustinstansbury/medal,ZenDevelopmentSystems/medal,chaitu2289/xray_scattering,chaitu2289/xray_scattering