doc: note that the FIPS provider contains some non-approved algorithms.
Also note how to select them.
@@ -274,9 +274,10 @@ be loaded explicitly, either in code or through OpenSSL configuration
(see L<config(5)>).
Should it be needed (if other providers are loaded and offer
implementations of the same algorithms), the property "provider=fips" can
-be used as a search criterion for these implementations. All algorithm
+be used as a search criterion for these implementations. All approved algorithm
implementations in the FIPS provider can also be selected with the property
-"fips=yes".
+"fips=yes". The FIPS provider also contains a number of non-approved algorithm
+implementations and these can be selected with the property "fips=no".
=head2 Legacy provider
