fix typo and space at end of comment

Author: ggojska

sycl/include/sycl/ext/oneapi/matrix/matrix-unified.hpp

@@ -496,8 +496,8 @@ void joint_matrix_copy(
   auto wi_data_dst = sycl::ext::oneapi::detail::get_wi_data(sg, dst);
   for (int i = 0; i < wi_data_c.length(); i++) {
     if constexpr (std::is_same_v<T1, sycl::half>) {
-      // Special case for SRC type sycl:half since we can't 
-      // cast direvtly from wi_element(typed half) to other type.
+      // Special case for SRC type sycl:half since we can't
+      // cast directly from wi_element(typed half) to other type.
       // first cast is from wi_element to half (T1).
       // second cast is from half to dst type (T2).
       wi_data_dst[i] = static_cast<storage_element_type>(