provider-storemgmt: Document the input-type and properties parameters.

Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15100)

doc/man7/provider-storemgmt.pod

diff --git a/doc/man7/provider-storemgmt.pod b/doc/man7/provider-storemgmt.pod
index 32f4e46..d34f037 100644
--- a/doc/man7/provider-storemgmt.pod
+++ b/doc/man7/provider-storemgmt.pod
@@ -153,6 +153,16 @@
 Indicates that the caller wants to search for an object with the given
 alias (some call it a "friendly name").
 
+=item "properties" (B<OSSL_STORE_PARAM_PROPERTIES) <utf8 string>
+
+Property string to use when querying for algorithms such as the B<OSSL_DECODER>
+decoder implementations.
+
+=item "input-type" (B<OSSL_STORE_PARAM_INPUT_TYPE) <utf8 string>
+
+Type of the input format as a hint to use when decoding the objects in the
+store.
+
 =back
 
 Several of these search criteria may be combined.  For example, to