Node type third_party_settings config schema is missing

Seems to work! Thanks!
Not sure this is worthy of a changelog entry, so LGTM 🎉

diff --git a/config/sync/node.type.article.yml b/config/sync/node.type.article.yml
index 0a94094b7..d259d783e 100644
--- a/config/sync/node.type.article.yml
+++ b/config/sync/node.type.article.yml
@@ -7,7 +7,7 @@ dependencies:
     - node_singles
 third_party_settings:
   node_singles:
-    is_single: 0
+    is_single: false
   menu_ui:
     available_menus: {  }
     parent: ''
diff --git a/config/sync/node.type.homepage.yml b/config/sync/node.type.homepage.yml
index dcf01fd47..6aae14164 100644
--- a/config/sync/node.type.homepage.yml
+++ b/config/sync/node.type.homepage.yml
@@ -10,7 +10,7 @@ third_party_settings:
     available_menus: {  }
     parent: ''
   node_singles:
-    is_single: 1
+    is_single: true
 name: Homepage
 type: homepage
 description: 'Homepage (homepage)'
--- a/config/sync/node.type.news_overview.yml
+++ b/config/sync/node.type.news_overview.yml
@@ -10,7 +10,7 @@ third_party_settings:
     available_menus: {  }
     parent: ''
   node_singles:
-    is_single: 1
+    is_single: true
 name: 'News overview'
 type: news_overview
 description: 'News overview (news_overview)'

...

Automatically closed - issue fixed for 2 weeks with no activity.