sil-opt: Fix the -disable-sil-ownership-verifier command line option

I messed this up when I worked on the sil-opt command line options.

Author: eeckstein

lib/DriverTool/sil_opt_main.cpp

@@ -223,7 +223,7 @@ struct SILOptOptions {
 
   llvm::cl::opt<bool>
   DisableSILOwnershipVerifier = llvm::cl::opt<bool>(
-      "disable = llvm::cl::opt<bool> DisableSILOwnershipVerifier(-sil-ownership-verifier",
+      "disable-sil-ownership-verifier",
       llvm::cl::desc(
           "Do not verify SIL ownership invariants during SIL verification"));