format README

Author: kga

check-ping/README.md

@@ -1,46 +1,47 @@
 # check-ping
 
 ## Description
+
 Check ICMP Ping connections with the specified host.
 
 ## Synopsis
-```
+
+```bash
 check-ping -H 127.0.0.1 -n 5 -w 100
 ```
 
 ## Installation
 
 First, build this program.
 
-```
+```bash
 go get github.com/mackerelio/go-check-plugins
 cd $(go env GOPATH)/src/github.com/mackerelio/go-check-plugins/check-ping
 go install
 ```
 
 Or you can use this program by installing the official Mackerel package. See [Using the official check plugin pack for check monitoring - Mackerel Docs](https://mackerel.io/docs/entry/howto/mackerel-check-plugins).
 
-
 Next, you can execute this program :-)
 
-```
+```bash
 check-ping -H 127.0.0.1 -n 5 -w 100
 ```
 
-
 ## Setting for mackerel-agent
 
-If there are no problems in the execution result, add a setting in mackerel-agent.conf .
+If there are no problems in the execution result, add a setting in mackerel-agent.conf.
 
-```
+```toml
 [plugin.checks.check-ping-sample]
 command = ["check-ping", "-H", "127.0.0.1", "-n", "5", "-w", "100"]
 ```
 
 ## Usage
+
 ### Options
 
-```
+```text
   -H, --host=      check target IP Address
   -n, --count=     sending (and receiving) count ping packets (default: 1)
   -w, --wait-time= wait time, Max RTT(ms) (default: 1000)