improved ActiveStorage querying guides with PR feedback

Author: thiagodiniz

guides/source/active_storage_overview.md

@@ -664,31 +664,27 @@ are stored before the form is submitted, they can be used to retain uploads when
 
 ## Querying
 
-Active Storage attachments are just ordinary Active Record associations behind the scenes, so you can use the usual `joins` / `where` toolbox to look up records whose attachments meet specific criteria.
+Active Storage attachments are Active Record associations behind the scenes, so you can use the usual [query methods](active_record_querying.html) to look up records for attachments that meet specific criteria.
 
 ### `has_one_attached`
 
-`has_one_attached` creates a `has_one` association called `"<name>_attachment"` and a `has_one :through` association called `"<name>_blob"`.
-Need every user whose avatar is a PNG?
+[`has_one_attached`](https://api.rubyonrails.org/classes/ActiveStorage/Attached/Model.html#method-i-has_one_attached) creates a `has_one` association named `"<name>_attachment"` and a `has_one :through` association named `"<name>_blob"`.
+To select every user where the avatar is a PNG, run the following:
 
 ```ruby
-User
-  .joins(:avatar_blob)
-  .where(active_storage_blobs: { content_type: "image/png" })
+User.joins(:avatar_blob).where(active_storage_blobs: { content_type: "image/png" })
 ```
 
 ### `has_many_attached`
 
-`has_many_attached` creates a `has_many` association called `"<name>_attachments"` and a `has_many :through` association called `"<name>_blobs"` (note the plural).
-Want all messages whose images are videos instead of photos?
+[`has_many_attached`](https://api.rubyonrails.org/classes/ActiveStorage/Attached/Model.html#method-i-has_many_attached) creates a `has_many` association called `"<name>_attachments"` and a `has_many :through` association called `"<name>_blobs"` (note the plural).
+To select all messages where images are videos rather than photos you can do the following:
 
 ```ruby
-Message
-  .joins(:images_blobs)
-  .where(active_storage_blobs: { content_type: "video/mp4" })
+Message.joins(:images_blobs).where(active_storage_blobs: { content_type: "video/mp4" })
 ```
 
-Because these are plain SQL joins, remember that the query filters on the **`ActiveStorage::Blob`**, not the attachment record. You can combine the blob predicates above with any other scope conditions, just as you would with any other Active Record query.
+The query will filter on the [**`ActiveStorage::Blob`**](https://api.rubyonrails.org/classes/ActiveStorage/Blob.html), not the [attachment record](https://api.rubyonrails.org/classes/ActiveStorage/Attachment.html) because these are plain SQL joins. You can combine the blob predicates above with any other scope conditions, just as you would with any other Active Record query.
 
 
 Removing Files