Update users.yml - fix bad role label (#37192)

* Update users.yml - fix bad role label

@ksobrenat32 - is this correct? looks like only `beam_writer` failed.

fyi @yalah5084 the previous change did not add the privileges so I'm trying to fix it here.

* Update users.yml

Author: pabloem

infra/iam/users.yml

@@ -1239,4 +1239,5 @@
   email: yalahuangfeng@gmail.com
   member_type: user
   permissions:
-  - role: beam_writer
+  - role: projects/apache-beam-testing/roles/beam_viewer
+  - role: projects/apache-beam-testing/roles/beam_writer