read Typesense collection from env

Author: ruslandoga

config/runtime.exs

@@ -7,6 +7,7 @@ if config_env() == :prod do
     hexpm_secret: System.fetch_env!("HEXDOCS_HEXPM_SECRET"),
     typesense_url: System.fetch_env!("TYPESENSE_URL"),
     typesense_api_key: System.fetch_env!("TYPESENSE_API_KEY"),
+    typesense_collection: System.fetch_env!("TYPESENSE_COLLECTION"),
     fastly_key: System.fetch_env!("HEXDOCS_FASTLY_KEY"),
     fastly_hexdocs: System.fetch_env!("HEXDOCS_FASTLY_HEXDOCS"),
     queue_id: System.fetch_env!("HEXDOCS_QUEUE_ID"),