Apply suggestions from code review

Co-authored-by: Vahid Tavanashad <120411540+vtavana@users.noreply.github.com>

Author: antonwolfy

dpnp/backend/extensions/vm/arg.cpp

@@ -118,7 +118,7 @@ void init_arg(py::module_ m)
     };
     m.def("_arg", arg_pyapi,
           "Call `arg` function from OneMKL VM library to compute "
-          "the inverse tangent of vector elements",
+          "the argument of vector elements",
           py::arg("sycl_queue"), py::arg("src"), py::arg("dst"),
           py::arg("depends") = py::list());
 

dpnp/backend/extensions/vm/i0.cpp

@@ -118,7 +118,7 @@ void init_i0(py::module_ m)
     };
     m.def("_i0", i0_pyapi,
           "Call `i0` function from OneMKL VM library to compute "
-          "the inverse tangent of vector elements",
+          "the element-wise regular modified cylindrical Bessel function of order 0",
           py::arg("sycl_queue"), py::arg("src"), py::arg("dst"),
           py::arg("depends") = py::list());
 

dpnp/backend/extensions/vm/inv.cpp

@@ -118,7 +118,7 @@ void init_inv(py::module_ m)
     };
     m.def("_inv", inv_pyapi,
           "Call `inv` function from OneMKL VM library to compute "
-          "the inverse tangent of vector elements",
+          "the element-wise multiplicative inverse (or reciprocal) of vector elements",
           py::arg("sycl_queue"), py::arg("src"), py::arg("dst"),
           py::arg("depends") = py::list());