[doc/man3] Fix typo in DESCRIPTION of OSSL_ENCODER_properties
This commit fixes the DECSCRIPTION section of doc/man3/OSSL_ENCODER.pod,
where `OSSL_ENCODER_properties` was incorrectly referred to as
`OSSL_ENCODER_provider`.
@@ -63,7 +63,7 @@ I<encoder>, and when the count reaches zero, frees it.
OSSL_ENCODER_provider() returns the provider of the given
I<encoder>.
-OSSL_ENCODER_provider() returns the property definition associated
+OSSL_ENCODER_properties() returns the property definition associated
with the given I<encoder>.
OSSL_ENCODER_is_a() checks if I<encoder> is an implementation of an
