Correct link to smtp hook page.
Correct link to smtp hook page.

git-svn-id: 72b794ca7b43188aed56de932e8081c5d617dce0@1032548 13f79535-47bb-0310-9956-ffa450edef68

mbaechler/james-protocols,tools4origins/james-protocols,aduprat/james-protocols,linagora/james-protocols