Resolves issue of __rel_version__ having an extra dot, e.g. `0.3.0.`.
Resolves issue of __rel_version__ having an extra dot, e.g. `0.3.0.`.

PiperOrigin-RevId: 284317368
Change-Id: Iaa8dd848c23df7c7f3ed4b6fd38f826ddc2117a1

tensorflow/agents,tensorflow/agents