Add nested fields to SchemaDatasetFacet example (#335)

Signed-off-by: Мартынов Максим Сергеевич <[email protected]>

docs/spec/facets/dataset-facets/schema.md

@@ -7,6 +7,8 @@ sidebar_position: 6
 The schema dataset facet contains the schema of a particular dataset. 
 Besides a name, it provides an optional type and description of each field.
 
+Nested fields are supported as well.
+
 
 Example:
 
@@ -17,7 +19,7 @@ Example:
     "facets": {
       "schema": {
         "_producer": "https://some.producer.com/version/1.0",
-        "_schemaURL": "https://openlineage.io/spec/facets/1-0-0/SchemaDatasetFacet.json",
+        "_schemaURL": "https://openlineage.io/spec/facets/1-1-1/SchemaDatasetFacet.json",
         "fields": [
           {
             "name": "id",
@@ -33,6 +35,74 @@ Example:
             "name": "is_active",
             "type": "boolean",
             "description": "Has customer completed activation process"
+          },
+          {
+            "name": "phones",
+            "type": "array",
+            "description": "List of phone numbers",
+            "fields": [
+              {
+                "name": "_element",
+                "type": "string",
+                "description": "Phone number"
+              }
+            ]
+          },
+          {
+            "name": "address",
+            "type": "struct",
+            "description": "Customer address",
+            "fields": [
+              {
+                "name": "type",
+                "type": "string",
+                "description": "Address type, g.e. home, work, etc."
+              },
+              {
+                "name": "country",
+                "type": "string",
+                "description": "Country name"
+              },
+              {
+                "name": "zip",
+                "type": "string",
+                "description": "Zip code"
+              },
+              {
+                "name": "state",
+                "type": "string",
+                "description": "State name"
+              },
+              {
+                "name": "street",
+                "type": "string",
+                "description": "Street name"
+              }
+            ]
+          },
+          {
+            "name": "custom_properties",
+            "type": "map",
+            "fields": [
+              {
+                "name": "key",
+                "type": "string"
+              },
+              {
+                "name": "value",
+                "type": "union",
+                "fields": [
+                  {
+                    "name": "_0",
+                    "type": "string"
+                  },
+                  {
+                    "name": "_1",
+                    "type": "int64"
+                  }
+                ]
+              }
+            ]
           }
         ]
       }
@@ -42,4 +112,4 @@ Example:
 }
 ```
 
-The facet specification can be found [here](https://openlineage.io/spec/facets/1-0-0/SchemaDatasetFacet.json).
+The facet specification can be found [here](https://openlineage.io/spec/facets/1-1-1/SchemaDatasetFacet.json).