Merge pull request #52102 from choejwoo/ko/fix-typo-in-cm

[ko] Fix typo in configmap yaml example to sync with English version

Author: k8s-ci-robot

content/ko/docs/concepts/configuration/configmap.md

@@ -174,7 +174,7 @@ spec:
       readOnly: true
   volumes:
   - name: foo
-    configmap:
+    configMap:
       name: myconfigmap
 ```