Update README.md

Dell_MD38XX/README.md

@@ -41,19 +41,20 @@ At time of writing, and for CentOS, these are:
    * SMclient-11.25.0G06.0026-1.noarch
 
 Make your disk storage arrays known to the monitoring machine
-by registering them with the command::
+by registering them with the command:
 
-   sudo SMcli -A <IP_address1> <IP_address2>
-   
-See what arrays have been registered with the command::
+   `sudo SMcli -A <IP_address1> <IP_address2>`
+
+See what arrays have been registered with the command:
 
-   sudo SMcli -d -i
+   `sudo SMcli -d -i`
    
 Pick one array and check whether you can successfully query
 performance statistics, for example::
-
+```
    sudo /bin/SMcli 10.200.4.144  10.200.4.145 -e -c 'set session performanceMonitorInterval=5 performanceMonitorIterations=1 ; save storageArray performanceStats file=\"/tmp/perf.log\";'
-   
+```
+
 Discovery configuration
 -----------------------
 
@@ -62,15 +63,15 @@ not interested in gathering extensive information. In our case, we exclude
 the disk groups which are presented to Ceph servers, with names like `R2S1E0D3-02`
 (disk group in Rack 2, Storage Array 1, Enclosure 0, Drawer 3, 2nd disk picked
 from such drawer) with the expression::
-
+```
    Name: Dell MD38XX devices for discovery
    Expression type: Result is FALSE
-   Expression: ^\w\d\w\d.*
-   
-In the discovery rule `DELL MD38XX discovery Devices via SMcli` we thus filter
-on::
+   Expression: ^[a-zA-Z][0-9][a-zA-Z][0-9][a-zA-Z].*
+```
 
-   {#DEVNAME} matches @Dell MD38XX devices for discovery
+In the discovery rule `DELL MD38XX discovery Devices via SMcli` we thus filter
+on:
+   * `{#DEVNAME}` matches `@Dell MD38XX devices for discovery`
    
 
 Actions needed
@@ -78,13 +79,13 @@ Actions needed
 
    * Install the Template and apply it to a properly configured node (see above).
    * define the following macros::
-      * this one is used by discovery scripts::
+      * this one is used by discovery scripts:
 
-      {$MD38XX_CMD_ARGS_DISCO}  -->  -p /bin/SMcli -m ct1
+      `{$MD38XX_CMD_ARGS_DISCO}`  -->  `-p /bin/SMcli -m ct1`
 
-      * this one is used by the statistics gathering script::
+      * this one is used by the statistics gathering script:
       
-      {$MD38XX_CMD_ARGS}  --> -p /bin/SMcli -z 10.200.1.222 -c cephadm.ct1
+      `{$MD38XX_CMD_ARGS}`  --> `-p /bin/SMcli -z 10.200.1.222 -c cephadm.ct1`