Fix shell test

Author: Jlalond

lldb/test/Shell/Register/Core/x86-64-linux-tkill.test

@@ -1,6 +1,6 @@
 # XFAIL: system-darwin
 # XFAIL: system-windows
-# RUN: %lldb -b -s %s -c %p/Inputs/x86-64-linux-tkill.test | FileCheck %s
+# RUN: %lldb -b -s %s -c %p/Inputs/x86-64-linux-tkill.core | FileCheck %s
 
 thread list
-# CHECK: * thread #1, name = 'tkill.out', stop reason = SIGSEGV: sent by tkill system call (sender pid=649752, uid=2667987)
+# CHECK: hread #1: tid = 2667987, 0x00007f9a265076cd, name = 'tkill.out', stop reason = SIGSEGV: sent by tkill system call (sender pid=2667987, uid=649752)