Javadoc fix

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=146163449

java/google/registry/keyring/api/Keyring.java

@@ -154,7 +154,7 @@ public interface Keyring extends AutoCloseable {
    *
    * <p>This is a base32 value copied from the Braintree website.
    *
-   * @see google.registry.config.ConfigModule#provideBraintreePublicKey
+   * @see google.registry.config.RegistryConfig.ConfigModule#provideBraintreePublicKey
    */
   String getBraintreePrivateKey();