webapp: fixing link to SSH instructions in wiki -- fixes #799
webapp: fixing link to SSH instructions in wiki -- fixes #799

DrXyzzy/smc,tscholl2/smc,sagemathinc/smc,sagemathinc/smc,DrXyzzy/smc,sagemathinc/smc,tscholl2/smc,tscholl2/smc,DrXyzzy/smc,sagemathinc/smc,tscholl2/smc,DrXyzzy/smc,tscholl2/smc