Apply suggestions from code review

Co-authored-by: Aleksandr Statciuk <7253922+freearhey@users.noreply.github.com>

CONTRIBUTING.md

@@ -23,7 +23,7 @@
 **iptv-org** is more than just a repository for sharing currently available links in a playlist format. After years of commitment and moderation practices it has evolved into a knowledge base for [streams](https://github.com/iptv-org/iptv/tree/master/streams), [feeds and their descriptions](https://iptv-org.github.io/), [program guide sources](https://github.com/iptv-org/epg) and even the [API](https://github.com/iptv-org/api) updated daily for semi-automated distribution and moderation. Thus, to keep all available data in order, strict structural requirements must be followed and some contribution standards must be set. Learn more in the following topic [How iptv-org works](https://github.com/orgs/iptv-org/discussions/1318)
 
 ## Contribution
-### How to submit a new stream?
+### Submitting a new stream
 
 
 Before submitting a new stream make sure to acknowledge the [Requirements](#requirements) section and follow the [Validation](#validation) section of this Guide.
@@ -43,7 +43,7 @@ You have several options:
 - Add the link to the playlist directly using a [pull request](https://github.com/iptv-org/iptv/pulls).
 Follow the [Playlist Structure](#playlist-structure) and [Stream Description Scheme](#stream-description-scheme) if you have considered that way.
 If you're adding an alternative link please do not replace any other link that might be working for some.
-### How to fix the stream description?
+
 ### Fixing descriptions
 
 
@@ -51,7 +51,7 @@ First of all, make sure that the desired stream has the correct ID. A full list
 
 First of all, make sure that the desired stream has the correct ID. A full list of all supported channels and their corresponding IDs can be found on [iptv-org.github.io](https://iptv-org.github.io/). To change the stream ID of any link in the playlist, just fill out this [form](https://github.com/iptv-org/iptv/issues/new?assignees=&labels=streams%3Aedit&projects=&template=2_streams_edit.yml&title=Edit%3A+).
 
-### How to report a broken stream?
+If, however, you have found an error in the database itself, please refer to: [How to edit channel description?](https://github.com/iptv-org/database/blob/master/CONTRIBUTING.md#how-to-edit-channel-description)
 
 ### Reporting of broken streams
 
@@ -62,7 +62,7 @@ The only thing before publishing your report is to make sure that:
 
 - The link is still in our playlists. You can verify this by [searching](https://github.com/search?q=repo%3Aiptv-org%2Fiptv+http%3A%2F%2Fexample.com&type=code) the repository.
 - The link really doesn't work and is not just [geo-blocked](https://en.wikipedia.org/wiki/Geo-blocking). To double-check this, please follow our [Testing](#testing) guidelines.
-### How to find a broken stream?
+
 An issue without a valid link will be closed immediately.
 
 ### Finding of broken streams