address some feedback

Author: Alexander Batashev

sycl/include/CL/sycl/device.hpp

@@ -161,7 +161,7 @@ class __SYCL_EXPORT device {
   ///
   /// \param extension_name is a name of queried extension.
   /// \return true if SYCL device supports the extension.
-  __SYCL2020_DEPRECATED("use device aspects APIs instead")
+  __SYCL2020_DEPRECATED("use device::has() function with aspects APIs instead")
   bool has_extension(const std::string &extension_name) const;
 
   /// Query available SYCL devices

sycl/include/CL/sycl/platform.hpp

@@ -73,7 +73,8 @@ class __SYCL_EXPORT platform {
   ///
   /// \param ExtensionName is a string containing extension name.
   /// \return true if specified extension is supported by this SYCL platform.
-  __SYCL2020_DEPRECATED("use platform aspects APIs instead")
+  __SYCL2020_DEPRECATED(
+      "use platform::has() function with aspects APIs instead")
   bool has_extension(const std::string &ExtensionName) const;
 
   /// Checks if this SYCL platform is a host platform.

sycl/test/warnings/sycl_2020_deprecations.cpp

@@ -22,7 +22,7 @@ int main() {
   sycl::device Device{DevId};
   // expected-warning@+1 {{'get' is deprecated: OpenCL interop APIs are deprecated}}
   (void)Device.get();
-  // expected-warning@+1 {{'has_extension' is deprecated: use device aspects APIs instead}}
+  // expected-warning@+1 {{'has_extension' is deprecated: use device::has() function with aspects APIs instead}}
   (void)Device.has_extension("abc");
 
   cl_event ClEvent;
@@ -40,7 +40,7 @@ int main() {
   sycl::platform Platform{ClPlatform};
   // expected-warning@+1 {{'get' is deprecated: OpenCL interop APIs are deprecated}}
   (void)Platform.get();
-  // expected-warning@+1 {{'has_extension' is deprecated: use platform aspects APIs instead}}
+  // expected-warning@+1 {{'has_extension' is deprecated: use platform::has() function with aspects APIs instead}}
   (void)Platform.has_extension("abc");
 
   cl_command_queue ClQueue;