[SYCL][PI] Fix typo in comment

Signed-off-by: Bjoern Knafla <[email protected]>

Author: bjoernknafla

sycl/include/CL/sycl/detail/pi.hpp

@@ -107,7 +107,7 @@ std::string platformInfoToString(pi_platform_info info);
 template <class To, class From> To cast(From value);
 
 // Holds the PluginInformation for the plugin that is bound.
-// Currently a global varaible is used to store OpenCL plugin information to be
+// Currently a global variable is used to store OpenCL plugin information to be
 // used with SYCL Interoperability Constructors.
 extern std::shared_ptr<plugin> GlobalPlugin;