fix(curriculum): add isHidden: false to challenges

This includes certificates (where it does nothing), but does not
include any translations.

curriculum/challenges/english/05-apis-and-microservices/mongodb-and-mongoose/chain-search-query-helpers-to-narrow-search-results.english.md

@@ -2,6 +2,7 @@
 id: 587d7fb9367417b2b2512c12
 title: Chain Search Query Helpers to Narrow Search Results
 challengeType: 2
+isHidden: false
 forumTopicId: 301533
 ---
 

curriculum/challenges/english/05-apis-and-microservices/mongodb-and-mongoose/create-a-model.english.md

@@ -2,6 +2,7 @@
 id: 587d7fb6367417b2b2512c07
 title: Create a Model
 challengeType: 2
+isHidden: false
 forumTopicId: 301535
 ---
 

curriculum/challenges/english/05-apis-and-microservices/mongodb-and-mongoose/create-and-save-a-record-of-a-model.english.md

@@ -2,6 +2,7 @@
 id: 587d7fb6367417b2b2512c09
 title: Create and Save a Record of a Model
 challengeType: 2
+isHidden: false
 forumTopicId: 301536
 ---
 

curriculum/challenges/english/05-apis-and-microservices/mongodb-and-mongoose/create-many-records-with-model.create.english.md

@@ -2,6 +2,7 @@
 id: 587d7fb7367417b2b2512c0a
 title: Create Many Records with model.create()
 challengeType: 2
+isHidden: false
 forumTopicId: 301537
 ---
 

curriculum/challenges/english/05-apis-and-microservices/mongodb-and-mongoose/delete-many-documents-with-model.remove.english.md

@@ -2,6 +2,7 @@
 id: 587d7fb8367417b2b2512c11
 title: Delete Many Documents with model.remove()
 challengeType: 2
+isHidden: false
 forumTopicId: 301538
 ---
 

curriculum/challenges/english/05-apis-and-microservices/mongodb-and-mongoose/delete-one-document-using-model.findbyidandremove.english.md

@@ -2,6 +2,7 @@
 id: 587d7fb8367417b2b2512c10
 title: Delete One Document Using model.findByIdAndRemove
 challengeType: 2
+isHidden: false
 forumTopicId: 301539
 ---
 

curriculum/challenges/english/05-apis-and-microservices/mongodb-and-mongoose/install-and-set-up-mongoose.english.md

@@ -2,6 +2,7 @@
 id: 587d7fb6367417b2b2512c06
 title: Install and Set Up Mongoose
 challengeType: 2
+isHidden: false
 forumTopicId: 301540
 ---
 

curriculum/challenges/english/05-apis-and-microservices/mongodb-and-mongoose/perform-classic-updates-by-running-find-edit-then-save.english.md

@@ -2,6 +2,7 @@
 id: 587d7fb8367417b2b2512c0e
 title: 'Perform Classic Updates by Running Find, Edit, then Save'
 challengeType: 2
+isHidden: false
 forumTopicId: 301541
 ---
 

curriculum/challenges/english/05-apis-and-microservices/mongodb-and-mongoose/perform-new-updates-on-a-document-using-model.findoneandupdate.english.md

@@ -2,6 +2,7 @@
 id: 587d7fb8367417b2b2512c0f
 title: Perform New Updates on a Document Using model.findOneAndUpdate()
 challengeType: 2
+isHidden: false
 forumTopicId: 301542
 ---
 

curriculum/challenges/english/05-apis-and-microservices/mongodb-and-mongoose/use-model.find-to-search-your-database.english.md

@@ -2,6 +2,7 @@
 id: 587d7fb7367417b2b2512c0b
 title: Use model.find() to Search Your Database
 challengeType: 2
+isHidden: false
 forumTopicId: 301543
 ---
 

curriculum/challenges/english/05-apis-and-microservices/mongodb-and-mongoose/use-model.findbyid-to-search-your-database-by-id.english.md

@@ -2,6 +2,7 @@
 id: 587d7fb7367417b2b2512c0d
 title: Use model.findById() to Search Your Database By _id
 challengeType: 2
+isHidden: false
 forumTopicId: 301544
 ---
 

curriculum/challenges/english/05-apis-and-microservices/mongodb-and-mongoose/use-model.findone-to-return-a-single-matching-document-from-your-database.english.md

@@ -2,6 +2,7 @@
 id: 587d7fb7367417b2b2512c0c
 title: Use model.findOne() to Return a Single Matching Document from Your Database
 challengeType: 2
+isHidden: false
 forumTopicId: 301545
 ---