Removed the recommendation for ssh

As discussed many times during the Gerrit conferences and hackathons,
Git/SSH replication on Gerrit isn't stable enough due to the JSch
client stack. Removing the recommendation from the documentation
may help in choosing alternative methods.

Change-Id: I3c8646135999d6cbb99b58d83d42655d25ea23e9
diff --git a/src/main/resources/Documentation/config.md b/src/main/resources/Documentation/config.md
index 436c2dd..cfdd91d 100644
--- a/src/main/resources/Documentation/config.md
+++ b/src/main/resources/Documentation/config.md
@@ -4,7 +4,7 @@
 Enabling Replication
 --------------------
 
-If replicating over SSH (recommended), ensure the host key of the
+If replicating over SSH, ensure the host key of the
 remote system(s) is already in the Gerrit user's `~/.ssh/known_hosts`
 file.  The easiest way to add the host key is to connect once by hand
 with the command line: