update resource terms to CamelCase

where a resource is mentioned in the description, use CamelCase.

Author: tomkivlin

content/en/docs/reference/kubectl/conventions.md

@@ -40,19 +40,19 @@ You can generate the following resources with a kubectl command, `kubectl create
 
 * `clusterrole`: Create a ClusterRole.
 * `clusterrolebinding`: Create a ClusterRoleBinding for a particular ClusterRole.
-* `configmap`: Create a configmap from a local file, directory or literal value.
-* `cronjob`: Create a cronjob with the specified name.
-* `deployment`: Create a deployment with the specified name.
-* `job`: Create a job with the specified name.
-* `namespace`: Create a namespace with the specified name.
-* `poddisruptionbudget`: Create a pod disruption budget with the specified name.
-* `priorityclass`: Create a priorityclass with the specified name.
-* `quota`: Create a quota with the specified name.
-* `role`: Create a role with single rule.
+* `configmap`: Create a ConfigMap from a local file, directory or literal value.
+* `cronjob`: Create a CronJob with the specified name.
+* `deployment`: Create a Deployment with the specified name.
+* `job`: Create a Job with the specified name.
+* `namespace`: Create a Namespace with the specified name.
+* `poddisruptionbudget`: Create a PodDisruptionBudget with the specified name.
+* `priorityclass`: Create a PriorityClass with the specified name.
+* `quota`: Create a Quota with the specified name.
+* `role`: Create a Role with single rule.
 * `rolebinding`: Create a RoleBinding for a particular Role or ClusterRole.
-* `secret`: Create a secret using specified subcommand.
-* `service`: Create a service using specified subcommand.
-* `serviceaccount`: Create a service account with the specified name.
+* `secret`: Create a Secret using specified subcommand.
+* `service`: Create a Service using specified subcommand.
+* `serviceaccount`: Create a ServiceAccount with the specified name.
 
 ### `kubectl apply`