sparse/gemv.hpp: rename init_sparse_gemv_dispatch_vector -> init_sparse_gemv_dispatch_table

Follows the rename made in gemv.cpp when the dispatch mechanism was
changed from a 1-D vector to a 2-D table (value type x index type).
All other declarations (sparse_gemv signature, parameters) are unchanged.

Author: abagusetty

dpnp/backend/extensions/sparse/gemv.hpp

@@ -51,6 +51,6 @@ sparse_gemv(sycl::queue &exec_q,
             const std::int64_t nnz,
             const std::vector<sycl::event> &depends);
 
-extern void init_sparse_gemv_dispatch_vector(void);
+extern void init_sparse_gemv_dispatch_table(void);
 
 } // namespace dpnp::extensions::sparse