fix more comments

Signed-off-by: Tikhomirova, Kseniya <[email protected]>

Author: KseniyaTikhomirova

libsycl/docs/index.rst

@@ -53,7 +53,7 @@ This requires at least partial support of the following functionality on the lib
   * Unified shared memory allocation/deallocation
   * Program manager, an internal component for retrieving and using device images from the multi-architectural binaries
 
-Builds steps
+Build steps
 ========
 
 To build LLVM with libsycl runtime enabled the following script can be used.

libsycl/include/sycl/__detail/config.hpp

@@ -41,8 +41,8 @@
 
 #    else // _WIN32
 
-#      define _LIBSYCL_DLL_LOCAL [[gnu::visibility("hidden")]]
-#      define _LIBSYCL_EXPORT [[gnu::visibility("default")]]
+#      define _LIBSYCL_DLL_LOCAL [[__gnu__::__visibility__("hidden")]]
+#      define _LIBSYCL_EXPORT [[__gnu__::__visibility__("default")]]
 
 #    endif // _WIN32
 #  endif   // _LIBSYCL_EXPORT