Fix schema

Author: tahsinaislam

db/schema.rb

@@ -1010,7 +1010,7 @@
     t.string "feature_key", null: false
     t.string "key", null: false
     t.datetime "updated_at", null: false
-    t.text "value"
+    t.string "value"
     t.index ["feature_key", "key", "value"], name: "index_flipper_gates_on_feature_key_and_key_and_value", unique: true
   end