Fixed typo and updated.

README.asciidoc

@@ -106,16 +106,20 @@ Dependency
 |====================================================
 
 Note;;
+
   GnuTLS has precedence over OpenSSL if both libraries are installed.
-  If you prefer OpenSSL, run configure with \--without-gnutls.
+  If you prefer OpenSSL, run configure with \--without-gnutls
+  \--with-openssl.
 
 Note;;
+
   libnettle has precedence over libgcrypt and libgcrypt has precedence
   over OpenSSL. If you prefer libgcrypt, run configure with
-  \--without-libnettle. If you prefer \--without-libnettle
-  \--without-libgcrypt.
+  \--without-libnettle \--with-libgcrypt. If you prefer OpenSSL, run
+  configure with \--without-gnutls \--with-openssl.
 
 Note;;
+
   libxml2 has precedence over Expat if both libraries are installed.
   If you prefer Expat, run configure with \--without-libxml2.