Merge pull request #5 from zihanKuang/fix-pass-percentage

Fix: pass_percentage Always Defaults to 70

Author: leecalcote

content/challenges/3e2f9c82-1a4c-4781-adf9-99ec22cd994e/how-to -add-volumes-to-kubernetes-clusters/exam.md

@@ -1,6 +1,6 @@
 ---
 title: "Kubernetes Volumes Challenge Exam"
-passing_percentage: 70
+pass_percentage: 70
 type: "test"
 questions:
   - id: "q1"