Add a note to update http://download.geany.org/MD5SUMS

doc/making-a-release

@@ -3,7 +3,7 @@ For major releases:
 * Agree string freeze period for translations.
 * Try to synchronize release date with geany-plugins.
 
-Update NEWS file - ideally each committer should review their changes 
+Update NEWS file - ideally each committer should review their changes
 and summarize the interesting ones.  Use `git log --author='name'`
 to filter commits by a particular developer name.
 
@@ -25,6 +25,8 @@ to home directory and after the upload is finished move them into
 /srv/www/download.geany.org/.
 Rename LATEST-IS-... to the new version number in
 /srv/www/download.geany.org/ and /srv/www/www.geany.org/files.
+Execute (as user geany) /home/geany/md5sums to update
+/srv/www/download.geany.org/MD5SUMS.
 Make sure the public part of the GPG key used to sign the archives
 can be found on the download page.