message: Grammar, clarity, etc.
diff: @@ -190,10 +190,10 @@ databases are supported, plugins receive logically separated cache connections,
  which are powered by [Keyv](https://github.com/lukechilds/keyv) under the hood.
  At this time of writing, Backstage can be configured to use one of two cache
  -stores: memory, which is mainly used for local testing, and memcache, which is
  -is a cache store better suited for production deployment. The right cache store
  -for your Backstage instance will depend on your own run-time constraints and
  -those specified by the plugins you're running.
  +stores: memory, which is mainly used for local testing, and memcache, which is a
  +cache store better suited for production deployment. The right cache store for
  +your Backstage instance will depend on your own run-time constraints and those
  +required of the plugins you're running.
  Contributions supporting other cache stores are welcome!
  