tf-a-weekly.yaml: removing yaml designation

Change-Id: I0441b75e2a347224402bf62888518e11a140ba01
Signed-off-by: mardyk01 <mark.dykes@arm.com>
diff --git a/tf-a-ci-coverage-gateway.yaml b/tf-a-ci-coverage-gateway.yaml
index 4b53738..8110f3e 100644
--- a/tf-a-ci-coverage-gateway.yaml
+++ b/tf-a-ci-coverage-gateway.yaml
@@ -1,5 +1,5 @@
 - job:
-    name: tf-a-ci-coverage-gateway.yaml
+    name: tf-a-ci-coverage-gateway
     node: docker-amd64-tf-a-jammy
     project-type: freestyle
     concurrent: true