update: generate docs examples as per latest 1.8.x source.

docs/examples/1.8.x/server-python/examples/databases/upsert-documents.md

@@ -0,0 +1,14 @@
+from appwrite.client import Client
+from appwrite.services.databases import Databases
+
+client = Client()
+client.set_endpoint('https://<REGION>.cloud.appwrite.io/v1') # Your API Endpoint
+client.set_admin('') # 
+client.set_key('<YOUR_API_KEY>') # Your secret API key
+
+databases = Databases(client)
+
+result = databases.upsert_documents(
+    database_id = '<DATABASE_ID>',
+    collection_id = '<COLLECTION_ID>'
+)