diff --git a/REFERENCE.md b/REFERENCE.md
new file mode 100644
index 0000000..64479bc
--- /dev/null
+++ b/REFERENCE.md
@@ -0,0 +1,37 @@
+# Reference
+
+<!-- DO NOT EDIT: This document was generated by Puppet Strings -->
+
+## Table of Contents
+
+### Functions
+
+* [`domain::customer`](#domaincustomer)
+* [`domain::site`](#domainsite)
+
+## Functions
+
+### <a name="domaincustomer"></a>`domain::customer`
+
+Type: Puppet Language
+
+The domain::customer function.
+
+#### `domain::customer()`
+
+The domain::customer function.
+
+Returns: `Optional[String]`
+
+### <a name="domainsite"></a>`domain::site`
+
+Type: Puppet Language
+
+The domain::site function.
+
+#### `domain::site()`
+
+The domain::site function.
+
+Returns: `Optional[String]`
+
diff --git a/metadata.json b/metadata.json
index 6704ade..35d8fa2 100644
--- a/metadata.json
+++ b/metadata.json
@@ -14,12 +14,7 @@
     {
       "operatingsystem": "Ubuntu",
       "operatingsystemrelease": [
-        "18.04"
-      ]
-    },
-    {
-      "operatingsystem": "Ubuntu",
-      "operatingsystemrelease": [
+        "18.04",
         "20.04"
       ]
     }