By default, f-strings use __str__ not __repr__, unless supplied with a
"!r" at the end of the str. Rather than going through and making the
strings work for the overridden __repr__ for endpoints, it's easier just
to convert the method over to __str__.
Also cleaned up some broken routes and formatting.
Simplifying routing a bit helps me to check which endpoint the user is
visiting. Also will make it a lot easier down the road to rewrite,
whenever I get around to renaming "autocomplete" to a more appropriate
name (like "suggestion" or something).