Fix typo in manual
Fix typo in manual

MarcelGerber/tern,neoclide/tern,MarcelGerber/tern,emacsmirror/tern,MarcelGerber/tern,marijnh/tern,ternjs/tern,othree/tern,emacsmirror/tern,fileability/tern,marijnh/tern,emacsmirror/tern,ternjs/tern,fileability/tern,fileability/tern,othree/tern,ternjs/tern,neoclide/tern,othree/tern,neoclide/tern,marijnh/tern