Adjust German translation of the "but wait" point on sideloading

[IllDepence]

This PR changes the German translation of the "but wait" point on sideloading.

Reason for the adjustment:
The current translation does not lead to a meaningful sentence when the German "But wait, isn't this..." is prepended.

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Before:

• "Aber Moment mal, ist das nicht..." + "...wird das auch bei Verwendung des erweiterten Ablaufs noch per Sideloading erfolgen?"
• → Reads: "But wait, is that not will it still be done via sideloading if the advanced flow is used?"

After

• "Aber Moment mal, ist das nicht..." + "...weiterhin Sideloading, wenn man den erweiterten Ablauf verwendet?"
• → Reads: "But wait, is that not still sideloading if you use the advanced flow?"

[marcprux]

Thanks!