Correct "varaible" typo in comment


git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@353340 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/ELF/Config.h b/ELF/Config.h
index 7440026..4e6c44f 100644
--- a/ELF/Config.h
+++ b/ELF/Config.h
@@ -265,7 +265,7 @@
   //
   // Since the flag is updated by multi-threaded code, we use std::atomic.
   // (Writing to a variable is not considered thread-safe even if the
-  // varaible is boolean and we always set the same value from all threads.)
+  // variable is boolean and we always set the same value from all threads.)
   std::atomic<bool> HasStaticTlsModel{false};
 
   // Holds set of ELF header flags for the target.