fix typho

Change-Id: If641062d751bd1a97c09a0d7d1f85a9f1776c9ff
diff --git a/cleanup-pipeline.groovy b/cleanup-pipeline.groovy
index 077f51c..867eda8 100644
--- a/cleanup-pipeline.groovy
+++ b/cleanup-pipeline.groovy
@@ -68,7 +68,7 @@
         } else if (STACK_TYPE == 'aws') {
 
             aws.deleteStack(venv_path, env_vars, STACK_NAME)
-            aws.waitForStatus(venv_path, evn_vars, STACK_NAME, 'DELETE_COMPLETE', ['DELETE_FAILED'])
+            aws.waitForStatus(venv_path, env_vars, STACK_NAME, 'DELETE_COMPLETE', ['DELETE_FAILED'])
 
         } else {
             throw new Exception('Stack type is not supported')