message: Fix ref to exempli gratia
diff: @@ -44,8 +44,8 @@ Backstage model and the primary way to discover existing functionality in the
  ecosystem.
  APIs are implemented by components and form boundaries between components. They
  -might be defined using an RPC IDL (eg Protobuf, GraphQL, ...), a data schema (eg
  -Avro, TFRecord, ...), or as code interfaces. In any case, APIs exposed by
  +might be defined using an RPC IDL (e.g., Protobuf, GraphQL, ...), a data schema
  +(e.g., Avro, TFRecord, ...), or as code interfaces. In any case, APIs exposed by
  components need to be in a known machine-readable format so we can build further
  tooling and analysis on top.
  