Allow 20 characters for "View [organization]" button (go-gitea#13906)

In the "View [organization]" button on the dashboard, the organization name is currenly shortened to 10 chars.
This is a bit too limited. In all other places in the code the name is also shortened to 20 instead of 10.

Co-authored-by: 6543 <[email protected]>

Author: jpraet

templates/user/dashboard/navbar.tmpl

@@ -59,7 +59,7 @@
 				{{end}}
 				<div class="item">
 					<a class="ui blue basic button" href="{{.ContextUser.HomeLink}}" title='{{.i18n.Tr "home.view_home" .ContextUser.Name}}'>
-						{{.i18n.Tr "home.view_home" (.ContextUser.ShortName 10)}}
+						{{.i18n.Tr "home.view_home" (.ContextUser.ShortName 20)}}
 					</a>
 				</div>
 			</div>