Docs: clarify release process a bit

Author: sapegin

docs/Maintenance.md

@@ -78,8 +78,11 @@ Here’s a [good example of a change log](https://github.com/styleguidist/react-
 
 ### Preparing a change log
 
-1.  Generate a change log draft using [tamia-changelog](https://github.com/tamiadev/tamia-changelog): `npx tamia-changelog`
-2.  Edit `Changelog.md` file.
-3.  Commit the change log: `npx tamia-changelog commit`.
+1. Change to the `master` branch.
+2. Generate a change log draft using [tamia-changelog](https://github.com/tamiadev/tamia-changelog): `npx tamia-changelog`
+3. Edit `Changelog.md` file.
+4. Commit the change log: `npx tamia-changelog commit`.
 
 **Note:** do not commit the `Changelog.md` file, the release tool reads the changelog from the commit message. [Read how it works](https://blog.sapegin.me/all/semantic-release/).
+
+**Note:** you may create a pull request for a changelog. Make sure the actual commit in the `master` branch has a `Changelog:` tag for the release tool to see it.