Fix(curriculum): external mongoose links in backend development (#46413)

* remove the link

* added an news article

* removed the instruction link

* added mongoose article

* added _blank

* added _blank

* to not increase the other issue load part 1

* not increase the other issue load part 2

curriculum/challenges/english/05-back-end-development-and-apis/mongodb-and-mongoose/create-a-model.md

@@ -38,7 +38,7 @@ age :  number
 favoriteFoods : array of strings (*)
 ```
 
-Use the Mongoose basic schema types. If you want you can also add more fields, use simple validators like required or unique, and set default values. See the [Mongoose docs](http://mongoosejs.com/docs/guide.html).
+Use the Mongoose basic schema types. If you want you can also add more fields, use simple validators like required or unique, and set default values. See our <a href="https://www.freecodecamp.org/news/introduction-to-mongoose-for-mongodb-d2a7aa593c57/" target="_blank" rel="noopener noreferrer nofollow">Mongoose article</a>.
 
 Now, create a model called `Person` from the `personSchema`.
 

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

@@ -14,7 +14,7 @@ In the good old days, this was what you needed to do if you wanted to edit a doc
 
 Modify the `findEditThenSave` function to find a person by `_id` (use any of the above methods) with the parameter `personId` as search key. Add `"hamburger"` to the list of the person's `favoriteFoods` (you can use `Array.push()`). Then - inside the find callback - `save()` the updated `Person`.
 
-**Note:** This may be tricky, if in your Schema, you declared `favoriteFoods` as an Array, without specifying the type (i.e. `[String]`). In that case, `favoriteFoods` defaults to Mixed type, and you have to manually mark it as edited using `document.markModified('edited-field')`. See [Mongoose documentation](https://mongoosejs.com/docs/schematypes.html#Mixed)
+**Note:** This may be tricky, if in your Schema, you declared `favoriteFoods` as an Array, without specifying the type (i.e. `[String]`). In that case, `favoriteFoods` defaults to Mixed type, and you have to manually mark it as edited using `document.markModified('edited-field')`. See our <a href="https://www.freecodecamp.org/news/introduction-to-mongoose-for-mongodb-d2a7aa593c57/" target="_blank" rel="noopener noreferrer nofollow">Mongoose article</a>.
 
 # --hints--