[tools][wasm] wami: fix MSVC build

Change-Id: I3ae32354c592e4a605f1d0c34f4dd3d9cad16795
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3745404
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81532}

tools/wasm/module-inspector.cc

@@ -112,7 +112,7 @@ class FormatConverter {
 
       std::cout << std::fixed << std::setprecision(1) << std::setw(4)
                 << 100.0 * length / module_size;
-      std::cout << "\% of total\n";
+      std::cout << "% of total\n";
     }
   }