Revised wording, per comments

Signed-off-by: Terry Cox <terry@bootstrap.je>

_index.md

@@ -24,13 +24,13 @@ To help you get up to speed quickly, we have broken the specification down into
 The Continuous Delivery Foundation White Paper on CDEvents<br><br>
 {{< /blocks/feature >}}
 {{< blocks/feature icon="fa-solid fa-graduation-cap" title="[Primer](primer/)" >}}
-An introduction to the CDEvents Specification<br><br>
+An introduction to CDEvents and associated concepts<br><br>
 {{< /blocks/feature >}}
 {{< blocks/feature icon="fas fa-info-circle" title="[Common Metadata](spec/)" >}}
 An overview of Metadata common across the CDEvents Specification<br><br>
 {{< /blocks/feature >}}
 {{< blocks/feature icon="fa-solid fa-bars-staggered" title="[Core Events](core/)" >}}
-An introduction to events that are fundamental to pipeline execution and orchestration<br><br>
+Definition of specific events that are fundamental to pipeline execution and orchestration<br><br>
 {{< /blocks/feature >}}
 {{< blocks/feature icon="fa-solid fa-code-branch" title="[Source Code Control Events](source-code-version-control/)" >}}
 Handling Events relating to changes in version management of Source Code and related assets<br><br>