Fix typos.

llvm-svn: 212132
diff --git a/lldb/source/Commands/CommandObjectSettings.cpp b/lldb/source/Commands/CommandObjectSettings.cpp
index c533874..c7675fe 100644
--- a/lldb/source/Commands/CommandObjectSettings.cpp
+++ b/lldb/source/Commands/CommandObjectSettings.cpp
@@ -1155,7 +1155,7 @@
 
         if (argc != 1)
         {
-            result.AppendError ("'setttings clear' takes exactly one argument");
+            result.AppendError ("'settings clear' takes exactly one argument");
             result.SetStatus (eReturnStatusFailed);
             return false;
         }