update contributing.md due to gitea changes

CONTRIBUTING.md

@@ -1,25 +1,13 @@
 ## Contributing code the right way 
 
-*(or: how I learned to post merge requests without crying myself to sleep)*
+TLDR: it works like Github.
 
-New user accounts on Gogs are not allowed to fork repositories because people 
-use development accounts to spam. To get initial fork access, do the following:
+1. Register on the [development website](https://git.tt-rss.org);
+2. Fork the repository you're interested in;
+3. Do the needful;
+4. File a PR against master branch;
 
-1. Register on the forums and on [Gogs](https://git.tt-rss.org);
-2. Create a thread describing your proposed changes in [Development subforum](https://community.tt-rss.org/c/tiny-tiny-rss/development) 
-while including your Gogs username;
-3. You'll be given proper access and will be able to fork repositories and file PRs, etc;
-
-If you already have a fully functional Gogs account it works pretty much like Github:
-
-1. Fork the repository you're interested in;
-2. Do the needful;
-3. File a pull request with your changes against master branch;
-
-That's it. If you have any other questions, see this [forum thread](https://discourse.tt-rss.org/t/how-to-contribute-code-via-pull-requests-on-git-tt-rss-org/1850).
-
-If you don't want to deal with the above, you can also clone one of the repositories 
-locally, do the needful, and post resulting patches on the [forums](https://community.tt-rss.org/c/tiny-tiny-rss/development). 
+If you have any other questions, see this [forum thread](https://discourse.tt-rss.org/t/how-to-contribute-code-via-pull-requests-on-git-tt-rss-org/1850).
 
 Please don't inline patches in forum posts, attach files instead (``.patch`` or ``.diff`` file 
 extensions should work).