diff --git a/noxis-rs/src/options/preboot.rs b/noxis-rs/src/options/preboot.rs
index 47f2d79..58ab6a3 100644
--- a/noxis-rs/src/options/preboot.rs
+++ b/noxis-rs/src/options/preboot.rs
@@ -46,62 +46,62 @@ impl std::fmt::Display for MetricsPrebootParams {
 /// 
 /// `--no-hagent` - to disable hagent work module and set up work mode as autonomous
 /// ### usage :
-/// ```
+/// ``` bash
 /// noxis-rs ... --no-hagent ...
 /// ```
 /// 
 /// 
 /// `--no-logs` - to disable logging at all  
 /// ### usage :
-/// ```
+/// ``` bash
 /// noxis-rs ... --no-logs ...
 /// ```
 /// 
 /// `--refresh-logs` - to truncate logs directory 
 /// ### usage :
-/// ```
+/// ``` bash
 /// noxis-rs ... --refresh-logs ...
 /// ```
 /// 
 /// `--no-remote-config` - to disable work with Redis as config producer 
 /// ### usage :
-/// ```
+/// ``` bash
 /// noxis-rs ... --no-remote-config ...
 /// ```
 /// 
 /// `--no-sub` - to disable Redis subscribtion mechanism  
 /// ### usage :
-/// ```
+/// ``` bash
 /// noxis-rs ... --no-sub ...
 /// ```
 /// 
 /// `--socket-path` - to set Unix Domain Socket file's directory
 /// ### usage :
-/// ```
+/// ``` bash
 /// noxis-rs ... --no-sub ...
 /// ```
 ///
 /// `--log-to` - to set directory for logs 
 /// ### usage :
-/// ```
+/// ``` bash
 /// noxis-rs ... --log-to /dir/to/logs/ ...
 /// ```
 /// 
 /// `--remote-server-url` - to set Redis Server
 /// ### usage :
-/// ```
+/// ``` bash
 /// noxis-rs ... --remote-server-url 192.168.28.12 ...
 /// ```
 /// 
 /// `--config` - to set Noxis' config full path
 /// ### usage :
-/// ```
+/// ``` bash
 /// noxis-rs ... --config /etc/enode/settings.json ...
 /// ```
 /// 
 /// `--metrics` - to set metrics mode 
 /// ### usage :
-/// ```
+/// ``` bash
 /// noxis-rs ... --metrics full ...
 /// ```
 #[derive(Debug, Parser)]