Fix spelling readme (#196)

* Fix spelling in README

Author: e-pettersson-ericsson

README.md

@@ -86,8 +86,8 @@ Visit [Eiffel Community](https://eiffel-community.github.io) to get started and
 1. [**Step by Step Aggregation**](./wiki/Step-by-Step-Aggregation.md)
     - [**ArtifactCreatedEvent Aggregation**](./wiki/ArtifactCreatedEvent-aggregation.md)
     - [**EiffelTestCaseTriggeredEvent Aggregation**](./wiki/EiffelTestCaseTriggeredEvent-Aggregation.md)
-    - [**EiffleTestCaseStartedEvent Aggregation**](./wiki/EiffleTestCaseStartedEvent-aggregation.md)
-    - [**EiffleTestCaseFinishedEvent Aggregation**](./wiki/EiffleTestCaseFinishedEvent-aggregation.md)
+    - [**EiffelTestCaseStartedEvent Aggregation**](./wiki/EiffelTestCaseStartedEvent-aggregation.md)
+    - [**EiffelTestCaseFinishedEvent Aggregation**](./wiki/EiffelTestCaseFinishedEvent-aggregation.md)
     - [**EiffelArtifactPublishedEvent Aggregation**](./wiki/EiffelArtifactPublishedEvent-Aggregation.md)
     - [**EiffelConfidenceLevelModifiedEvent Aggregation**](./wiki/EiffelConfidenceLevelModifiedEvent-Aggregation.md)
 1. [**Step by Step Subscription Notification**](./wiki/Step-by-Step-Subscription-Notification.md)