package/uacme: mention openssl crypto backend in description

uacme supports OpenSSL as crypto backend since version 1.0.8.

Cc: Nicola Di Lieto <nicola.dilieto@gmail.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit b7eacd41bba29859d73cc2c12d013d2ef7f7e2ba)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/uacme/Config.in

@@ -6,9 +6,10 @@ config BR2_PACKAGE_UACME
 	help
 	  uacme is a client for the ACMEv2 protocol described in
 	  RFC8555, written in plain C code with minimal dependencies
-	  (libcurl and GnuTLS or mbedTLS). The ACMEv2 protocol allows
-	  a Certificate Authority (https://letsencrypt.org is a
-	  popular one) and an applicant to automate the process of
-	  verification and certificate issuance.
+	  (libcurl and either of GnuTLS, OpenSSL or mbedTLS). The
+	  ACMEv2 protocol allows a Certificate Authority
+	  (https://letsencrypt.org is a popular one) and an applicant
+	  to automate the process of verification and certificate
+	  issuance.
 
 	  https://github.com/ndilieto/uacme