Fix nit in comment

s/&/,/

Bug: v8:12191
Change-Id: Ib933470455c4a0f6e133bd1277cc2bba6aa83e12
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3158549Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Francis McCabe <fgm@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76817}

src/wasm/wasm-feature-flags.h

@@ -55,7 +55,7 @@
                                                                                \
   /* Stack Switching proposal. */                                              \
   /* https://github.com/WebAssembly/stack-switching */                         \
-  /* V8 side owner: thibaudm & fgm */                                          \
+  /* V8 side owner: thibaudm, fgm */                                           \
   V(stack_switching, "stack switching", false)
 
 // #############################################################################