s390: fix typo in syscall_wrapper.h

Looks like this endif comment was erroneously unchanged when copied over
from the x86 version.

Signed-off-by: Russell Currey <ruscur@russell.cc>
Link: https://lore.kernel.org/r/20220304090109.29386-1-ruscur@russell.cc
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

Author: ruscur

arch/s390/include/asm/syscall_wrapper.h

@@ -162,4 +162,4 @@
 	__diag_pop();									\
 	static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
 
-#endif /* _ASM_X86_SYSCALL_WRAPPER_H */
+#endif /* _ASM_S390_SYSCALL_WRAPPER_H */