new docs

REFERENCE.md

@@ -15,7 +15,7 @@
 
 * `systemd::journald`: This class manages and configures journald.
 * `systemd::logind`: This class manages systemd's login manager configuration.
-* `systemd::modules_loads`: Activate the  modules contained in modules-loads.d
+* `systemd::modules_loads`: Activate the modules contained in modules-loads.d
 * `systemd::networkd`: This class provides an abstract way to trigger systemd-networkd
 * `systemd::resolved`: This class provides an abstract way to trigger resolved.
 * `systemd::system`: This class provides a solution to enable accounting
@@ -624,7 +624,7 @@ systemd::modules_load{'impi.conf':
 }
 ```
 
-##### override a file in /lib/modules-load.d
+##### override /lib/modules-load.d/myservice.conf in /etc/modules-load.d/myservice.conf
 
 ```puppet
 systemd::modules_load{'myservice.conf':
@@ -668,7 +668,7 @@ Default value: `'/etc/modules-load.d'`
 
 ##### <a name="content"></a>`content`
 
-Data type: `Optional[String]`
+Data type: `Optional[String[1]]`
 
 The literal content to write to the file
 
@@ -678,7 +678,7 @@ Default value: ``undef``
 
 ##### <a name="source"></a>`source`
 
-Data type: `Optional[String]`
+Data type: `Optional[String[1]]`
 
 A ``File`` resource compatible ``source``