readme/ci: screenshot the adjective-collocates slide (ca.png) instead of the dropped lvc slide

Change-Id: Ib74abdc3d15440c74f01ab94058fd5c733c8b7ca
diff --git a/README.Rmd b/README.Rmd
index 51c2b6b..6925f7e 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -16,7 +16,7 @@
 ![title](https://gitlab.ids-mannheim.de/ids/revealjs/-/jobs/artifacts/main/raw/target/title.png?job=build-job)
 
 ![users](https://gitlab.ids-mannheim.de/ids/revealjs/-/jobs/artifacts/main/raw/target/users.png?job=build-job)
-![lvc](https://gitlab.ids-mannheim.de/ids/revealjs/-/jobs/artifacts/main/raw/target/lvc.png?job=build-job)
+![collocates](https://gitlab.ids-mannheim.de/ids/revealjs/-/jobs/artifacts/main/raw/target/ca.png?job=build-job)
 
 ![references](https://gitlab.ids-mannheim.de/ids/revealjs/-/jobs/artifacts/main/raw/target/references.png?job=build-job)