Fix for metadata name.

Author: rlhagerm

.doc_gen/metadata/tributary-lite_metadata.yaml

@@ -1,5 +1,5 @@
 # zexi 0.4.0
-cross_tributary-lite_serverless-application:
+tributary-lite_serverless-application:
   title: Build and test a serverless application
   title_abbrev: Build and test a serverless application
   synopsis: build and test a serverless application using &ABP; with &LAM; and &DDB;