Add ITL CheckCommand "thola check"

Author: BausPhi

doc/10-icinga-template-library.md

@@ -3286,7 +3286,7 @@ is a tool for monitoring network devices, that mainly uses SNMP.
 To run these commands you need a server that is running the Thola API.
 If you don't know how to do this, you can have a look at the plugin's
 [documentation](https://docs.thola.io). Also, you have to
-put the Thola-client binary into the *PluginContribDir*.
+put the Thola-client binary into the `PluginContribDir`.
 
 ##### thola-cpu-load <a id="plugin-contrib-command-thola-cpu-load"></a>
 
@@ -3347,8 +3347,8 @@ thola_identify_discover_timeouts   | **Optional.** The number of discover timeou
 
 > **Note**:
 >
-> One of the variables 'thola_identify_model', 'thola_identify_os_version', 
-> 'thola_identify_vendor' or 'thola_identify_serial_number' must be set
+> One of the variables `thola_identify_model`, `thola_identify_os_version`, 
+> `thola_identify_vendor` or `thola_identify_serial_number` must be set
 
 ##### thola-memory-usage <a id="plugin-contrib-command-thola-memory-usage"></a>