Update yard docs.

example-files/frame-title-frame.jsonld

@@ -0,0 +1,16 @@
+{
+  "@context": [
+    {
+      "@language": "en"
+    },
+    {
+      "title": {
+        "@id": "dct:title"
+      },
+      "titles": {
+        "@id": "dct:title",
+        "@container": "@language"
+      }
+    }
+  ]
+}

example-files/frame-title.jsonld

@@ -0,0 +1,17 @@
+{
+  "@context": [
+    {
+      "@language": "en"
+    },
+    {
+      "title": {
+        "@id": "dct:title"
+      },
+      "titles": {
+        "@id": "dct:title",
+        "@container": "@language"
+      }
+    }
+  ],
+  "title": "myTitle"
+}

lib/json/ld/flatten.rb

@@ -202,7 +202,7 @@ def create_node_map(element, graph_map,
     # * Deserialize the key into a map, and re-serialize the value of `@id`.
     # * If the map contains an entry with that value (after re-canonicalizing, as appropriate), and the associated antry has a item which matches the non-`@id` item from the map, the node is used to create an `@annotation` entry within that value.
     #
-    # @param [Hash{String => Hash}] input
+    # @param [Hash{String => Hash}] node_map
     # @return [Hash{String => Hash}]
     def create_annotations(node_map)
       node_map.keys.