fix typo

server_config:

  address: 0.0.0.0                  # milvus server ip address (IPv4)

  port: 19530                       # milvus server port, must in range [1025, 6553]

  port: 19530                       # milvus server port, must in range [1025, 65534]

  deploy_mode: single               # deployment type: single, cluster_readonly, cluster_writable

  time_zone: UTC+8                  # time zone, must be in format: UTC+X

  enable_monitor: false             # enable monitoring or not, must be a boolean

  collector: prometheus             # prometheus

  prometheus_config:

    port: 8080                      # port prometheus uses to fetch metrics, must in range [1025, 6553]

    port: 8080                      # port prometheus uses to fetch metrics, must in range [1025, 65534]

cache_config:

  cpu_cache_capacity: 16            # GB, CPU memory used for cache, must be a positive integer