🎉 Launch "flatten threads" feature

Fixed: twpowertools:153
Change-Id: I09eb246a4b6de130d5bed81cefe9109995aaf43b
diff --git a/src/common/optionsPrototype.json5 b/src/common/optionsPrototype.json5
index 8bcc0da..79569aa 100644
--- a/src/common/optionsPrototype.json5
+++ b/src/common/optionsPrototype.json5
@@ -139,6 +139,11 @@
     context: 'options',
     killSwitchType: 'option',
   },
+  'flattenthreads': {
+    defaultVale: false,
+    context: 'options',
+    killSwitchType: 'option',
+  },
 
   // Experiments:
   'workflows': {
@@ -156,11 +161,6 @@
     context: 'experiments',
     killSwitchType: 'experiment',
   },
-  'flattenthreads': {
-    defaultVale: false,
-    context: 'experiments',
-    killSwitchType: 'experiment',
-  },
 
   // Internal options:
   'ccdarktheme_switch_enabled': {