Fix misspelled target triples in MC/ARM test commands.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121901 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/MC/ARM/neont2-bitwise-encoding.s b/test/MC/ARM/neont2-bitwise-encoding.s
index f5062f8..3acd7a8 100644
--- a/test/MC/ARM/neont2-bitwise-encoding.s
+++ b/test/MC/ARM/neont2-bitwise-encoding.s
@@ -1,4 +1,4 @@
-@ RUN: llvm-mc -mcpu=cortex-a8 -triple thumb-unknown-unkown -show-encoding < %s | FileCheck %s
+@ RUN: llvm-mc -mcpu=cortex-a8 -triple thumb-unknown-unknown -show-encoding < %s | FileCheck %s
 @ XFAIL: *
 
 .code 16