mention linger option

docs/Manual.md

@@ -274,13 +274,14 @@ the following example configuration is a basic HTTP probe configuration, which o
 # HTTP Probe Configuration
 
 http:
- # A Website
+ # A Website without SO_LINGER
  - name: MegaEase Website (Global)
  url: https://megaease.com
+ linger: false
  labels:
  team: ease
  owner: megaease
- # Some of the Software support the HTTP Query
+ # Some of the Software supports HTTP probing
  - name: ElasticSearch
  url: http://elasticsearch.server:9200
  - name: Eureka
@@ -345,6 +346,7 @@ http:
  expression: "x_time('//feed/updated') > '2022-07-01'" # the expression to evaluate.
  # configuration
  timeout: 10s # default is 30 seconds
+ linger: false # Do not set SO_LINGER
 ```
 
 > **Note**:
@@ -517,6 +519,7 @@ tcp:
  host: example.com:22
  timeout: 10s # default is 30 seconds
  interval: 2m # default is 60 seconds
+ linger: false # Disable SO_LINGER
  proxy: socks5://proxy.server:1080 # Optional. Only support socks5.
  # Also support the `ALL_PROXY` environment.
  labels:
@@ -646,6 +649,7 @@ ssh:
  username: ubuntu
  key: /path/to/private.key
  cmd: "ps -ef | grep kafka"
+ linger: false # Disable SO_LINGER
 ```
 > **Note**:
 >
@@ -661,6 +665,7 @@ tls:
  host: expired.badssl.com:443
  proxy: socks5://proxy.server:1080 # Optional. Only support socks5.
  # Also support the `ALL_PROXY` environment.
+ linger: false # Disable SO_LINGER
  insecure_skip_verify: true # don't check cert validity
  expire_skip_verify: true # don't check cert expire date
  alert_expire_before: 168h # alert if cert expire date is before X, the value is a Duration,