DOCS-14153 remove single CA requirement x509

Author: andf-mongodb

source/includes/fact-ssl-certificate-authorities.rst

@@ -1,6 +1,6 @@
-For production use, your MongoDB deployment should use valid certificates
-generated and signed by a single certificate authority. You or your
-organization can generate and maintain an independent certificate
-authority, or use certificates generated by a third-party TLS/SSL
-vendor. Obtaining and managing certificates is beyond the scope of
+For production use, your MongoDB deployment should use valid
+certificates generated and signed by a certificate authority. You or
+your organization can generate and maintain an independent certificate
+authority, or use certificates generated by third-party TLS/SSL
+vendors. Obtaining and managing certificates is beyond the scope of
 this documentation.