message: small grammatical error
diff: @@ -117,7 +117,7 @@ through the proxy.
  Learn more about [the different components](overview/what-is-backstage.md) that
  make up Backstage.
  -### Why can't I dynamically install plugins without modifications the app?
  +### Why can't I dynamically install plugins without modifications to the app?
  This decision is part of the core architecture and development flow of
  Backstage. Plugins have a lot of freedom in what they provide and how they are
  