The desktop banners for dewiki need some minor changes, before we can run the campaign.

Acceptance Criteria

• The text of the link leading to the use of funds page says "Where does my donation go?"
• The link styles match those of the banners for dewiki (e. g. control banner of T207566):
  • The text color is black.
  • The text color does not change, when the link has already been visited.
  • The link is underlined on hover.
• The value of the URL parameter piwik_kwd is suffixed by -link.
• The missing comma in "We depend on donations averaging about 20 Euros, but 99% of our readers don't give." is added to the text of the banner.
• The label of the custom amount field is centered.
• The date in the tracking parameters is set to 181114.

Notes
The acceptance criteria match those for enwiki on desktop (T209428).