Link to internal site internally, which MOE will translate into the external site externally.
Also link to it from Truth.java.
RELNOTES=n/a
@@ -28,7 +28,8 @@ import java.util.Map;
import org.checkerframework.checker.nullness.compatqual.NullableDecl;
/**
- * The primary entry point for Truth, a fluent framework for test assertions.
+ * The primary entry point for <a href="https://truth.dev">Truth</a>, a library for fluent test
+ * assertions.
*
* <p>Compare these example JUnit assertions...
*
