Add the topic field to the page content type

config/field.field.node.page.field_topics.yml

@@ -0,0 +1,29 @@
+uuid: 51309177-e385-441d-8206-07d7615a386d
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.storage.node.field_topics
+    - node.type.page
+    - taxonomy.vocabulary.topics
+id: node.page.field_topics
+field_name: field_topics
+entity_type: node
+bundle: page
+label: Topics
+description: 'Choose one or more high-level topics to categorize your content across multiple content types.'
+required: false
+translatable: false
+default_value: {  }
+default_value_callback: ''
+settings:
+  handler: 'default:taxonomy_term'
+  handler_settings:
+    target_bundles:
+      topics: topics
+    sort:
+      field: name
+      direction: asc
+    auto_create: false
+    auto_create_bundle: ''
+field_type: entity_reference