Update shortcuts

Shortcut "q" is not supported anymore as stated in https://github.com/nextcloud/news/issues/1613#issuecomment-991891468
Shortcuts "c" and "v" seemed to have swapped descriptions.

Signed-off-by: Dennis Müller <dennis.mueller@bib.uni-mannheim.de>

CHANGELOG.md

@@ -6,6 +6,7 @@ The format is mostly based on [Keep a Changelog](https://keepachangelog.com/en/1
 
 ## [18.x.x]
 ### Changed
+- Change shortcut descriptions. (#1669)
 
 ### Fixed
 

templates/part.content.shortcuts.php

@@ -55,24 +55,20 @@
             </tr>
             <tr>
                 <td>c</td>
-                <td><?php p($l->t('Load next folder')); ?></td>
+                <td><?php p($l->t('Load previous folder')); ?></td>
             </tr>
             <tr>
                 <td>v</td>
-                <td><?php p($l->t('Load previous folder')); ?></td>
+                <td><?php p($l->t('Load next folder')); ?></td>
             </tr>
             <tr>
                 <td>a</td>
                 <td><?php p($l->t('Scroll to active navigation entry')); ?></td>
             </tr>
-            <tr>
-                <td>q</td>
-                <td><?php p($l->t('Focus search field')); ?></td>
-            </tr>
             <tr>
                 <td>shift + a</td>
                 <td><?php p($l->t('Mark current article\'s feed/folder read')); ?></td>
             </tr>
         </table>
     </div>
-</div>
+</div>