[MIRROR] fixes changelog linters [MDB IGNORE] (Skyrat-SS13#22353)

* fixes changelog linters (#76608)

This portion of the script wasn't updated, so we always got an error on
linters. This never threw a `sys.exit` error so this list hasn't been
updated for a solid while now...

Let's both add the prefix and make sure we throw so we don't forget
about this script in the future. Quite important to make sure this stuff
works!

* fixes changelog linters

---------

Co-authored-by: san7890 <[email protected]>

tools/ss13_genchangelog.py

@@ -60,7 +60,9 @@
     'refactor',
     'config',
     'admin',
-    'server'
+    'server',
+    'sound',
+    'image',
 ]
 
 def dictToTuples(inp):
@@ -127,6 +129,7 @@ def dictToTuples(inp):
                 (change_type, _) = dictToTuples(change)[0]
                 if change_type not in validPrefixes:
                     print('  {0}: Invalid prefix {1}'.format(fileName, change_type), file=sys.stderr)
+                    sys.exit(1)
                 author_entries += [change]
                 new += 1
         currentEntries[today][cl['author']] = author_entries