Fix example code with mismatched brackets.

haoyuz · copybara-github · commit 0ffef4a1a7ff · 2023-10-03T14:14:33.000-07:00
PiperOrigin-RevId: 570493766
diff --git a/README.md b/README.md
@@ -151,7 +151,7 @@ PYBIND11_MODULE(my_module, m) {
   m.def("mutate_message", [](MyMessage in) {
     MutateMessage(&in);
     return in;
-  }),
+  },
   pybind11::arg("in"));
 }
 ```

Original file line number	Diff line number	Diff line change
`@@ -151,7 +151,7 @@ PYBIND11_MODULE(my_module, m) {`
`151`	`151`	`m.def("mutate_message", [](MyMessage in) {`
`152`	`152`	`MutateMessage(&in);`
`153`	`153`	`return in;`
`154`		`- }),`
	`154`	`+ },`
`155`	`155`	`pybind11::arg("in"));`
`156`	`156`	`}`
`157`	`157`	```