Update kbctl command in demo/application-modernization

[mkananizadeh]

kubectl create secret generic kafka-secrets --from-file=.ids/BOOTSTRAP_SERVERS --from-file=.creds/CLIENT_KEY --from-file=.creds/CLIENT_SECRET --from-file=.creds/SASL_JAAS_CONFIG --from-file=.creds/SCHEMA_REGISTRY_API_KEY --from-file=.creds/SCHEMA_REGISTRY_API_SECRET --from-file=.creds/SCHEMA_REGISTRY_BASIC_AUTH_USER_INFO --from-file=.ids/SCHEMA_REGISTRY_URL --from-file=.creds/KSQLDB_API_KEY --from-file=.creds/KSQLDB_API_SECRET --from-file=.ids/KSQLDB_APP_ENDPOINT
command returns the following error

error: error reading .ids/BOOTSTRAP_SERVERS: no such file or directory

I think this is the right command
kubectl create secret generic kafka-secrets --from-file=.secrets/BOOTSTRAP_SERVERS --from-file=.secrets/CLIENT_KEY --from-file=.secrets/CLIENT_SECRET --from-file=.secrets/SASL_JAAS_CONFIG --from-file=.secrets/SCHEMA_REGISTRY_API_KEY --from-file=.secrets/SCHEMA_REGISTRY_API_SECRET --from-file=.secrets/SCHEMA_REGISTRY_BASIC_AUTH_USER_INFO --from-file=.secrets/SCHEMA_REGISTRY_URL --from-file=.secrets/KSQLDB_API_KEY --from-file=.secrets/KSQLDB_API_SECRET --from-file=.secrets/KSQLDB_APP_ENDPOINT

secret/kafka-secrets created