docs: mention ld warning

docs/contributing.md

@@ -37,6 +37,10 @@ Please just be sure to:
     * For linting just the modulegen: `make -C modulegen lint`
 * verify all tests are passing. Build and test the project with `make test-all` to do this.
     * For a given module or example, go to the module or example directory and run `make test`.
+    * If you find an `ld warning` message on MacOS, you can ignore it. It is a indeed a warning: https://github.com/golang/go/issues/61229
+> === Errors
+> ld: warning: '/private/var/folders/3y/8hbf585d4yl6f8j5yzqx6wz80000gn/T/go-link-2319589277/000018.o' has malformed LC_DYSYMTAB, expected 98 undefined symbols to start at index 1626, found 95 undefined symbols starting at index 1626
+
 * when updating the `go.mod` file, please run `make tidy-all` to ensure all modules are updated.
 
 ## Documentation contributions