Rename dpnp::kernels::erf namespace to dpnp::kernels::erfs per review comment

Author: antonwolfy

dpnp/backend/extensions/ufunc/elementwise_functions/erf_funcs.cpp

@@ -32,7 +32,6 @@
 
 #include "erf_funcs.hpp"
 #include "kernels/elementwise_functions/erf.hpp"
-// #include "kernels/elementwise_functions/erfc.hpp"
 
 // utils extension header
 #include "ext/common.hpp"
@@ -95,7 +94,7 @@ using ew_cmn_ns::unary_strided_impl_fn_ptr_t;
 
 #define MACRO_DEFINE_IMPL(__name__, __f_name__)                                \
                                                                                \
-    using dpnp::kernels::erf::__f_name__##Functor;                             \
+    using dpnp::kernels::erfs::__f_name__##Functor;                            \
                                                                                \
     template <typename argT, typename resT = argT, unsigned int vec_sz = 4,    \
               unsigned int n_vecs = 2, bool enable_sg_loadstore = true>        \

dpnp/backend/kernels/elementwise_functions/erf.hpp

@@ -29,7 +29,7 @@
 
 #include <sycl/sycl.hpp>
 
-namespace dpnp::kernels::erf
+namespace dpnp::kernels::erfs
 {
 template <typename OpT, typename ArgT, typename ResT>
 struct BaseFunctor
@@ -71,4 +71,4 @@ struct BaseFunctor
 
 MACRO_DEFINE_FUNCTOR(erf, Erf);
 MACRO_DEFINE_FUNCTOR(erfc, Erfc);
-} // namespace dpnp::kernels::erf
+} // namespace dpnp::kernels::erfs