Polishing.
Update reference documentation about query derivation support.
@@ -136,7 +136,6 @@ interface ReactivePersonRepository extends ReactiveSortingRepository<Person, Str
<4> Find a single entity for the given criteria. It completes with `IncorrectResultSizeDataAccessException` on non-unique results.
<5> Unless <4>, the first entity is always emitted even if the query yields more result documents.
<6> The `findByLastname` method shows a query for all people with the given last name.
-The query is provided, as R2DBC repositories do not support query derivation.
<7> A query for a single `Person` entity projecting only `firstname` and `lastname` columns.
The annotated query uses native bind markers, which are Postgres bind markers in this example.
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