Merge pull request #2900 from nikogenix/patch-6

Update part8e.md - Fix typo

Author: mluukkai

src/content/8/en/part8e.md

@@ -639,7 +639,7 @@ If the subscription does not work, check that you have correct connection settin
 
 The backend code can be found on [GitHub](https://github.com/fullstack-hy2020/graphql-phonebook-backend/tree/part8-7), branch <i>part8-7</i>.
 
-Implementing subscriptions involves a lot of configurations. You will be able to cope with the few exercises of this course without worrying much about the details. If you are planning to use subsctiptions in an production use application, you should definitely read Apollo's [documentation on subscriptions](https://www.apollographql.com/docs/apollo-server/data/subscriptions) carefully.
+Implementing subscriptions involves a lot of configurations. You will be able to cope with the few exercises of this course without worrying much about the details. If you are planning to use subscriptions in an production use application, you should definitely read Apollo's [documentation on subscriptions](https://www.apollographql.com/docs/apollo-server/data/subscriptions) carefully.
 
 ### Subscriptions on the client