fix error

Signed-off-by: Anand Kumar Singh <anandrkskd@gmail.com>

Author: anandrkskd

.tekton/agent-helm-build-pull-request.yaml

@@ -119,6 +119,10 @@ spec:
     - description: ""
       name: CHAINS-GIT_COMMIT
       value: $(tasks.clone-repository.results.commit)
+    - default: "sources/argocd-agent/install/helm-repo/argocd-agent-agent"
+      description: directory where the chart is stored 
+      name: chart-context
+      type: string
     tasks:
     - name: init
       params: