Some examples fail to parse

[jcorbin]

Discovered while covering the describe module in #52, we have a few examples which fail to parse:

$ ./scripts/gen_desc_tests.sh
internal story error
examples/maze.kni:8:1: Expected parenthetical expression to end with ")" or continue with operator
but got "v".
examples/maze.kni:8:1: Expected "}" but got ")".
examples/maze.kni:8:1: Expected end of file, got "}".
internal story error
examples/ship.kni:24:7: Expected expression but got "?".
examples/ship.kni:24:7: Expected "}" but got "?".
examples/ship.kni:24:7: Expected to the end of the block but got "}".
examples/ship.kni:37:7: Expected expression but got "?".
examples/ship.kni:37:7: Expected "}" but got "?".
examples/ship.kni:37:7: Expected to the end of the block but got "}".
Could not link next label "forward.airlock" at position examples/ship.kni:19:1
Could not link next label "dorsal.bridge.deck" at position examples/ship.kni:26:7
Could not link next label "dorsal.airlock" at position examples/ship.kni:28:7
Could not link next label "ventral.airlock" at position examples/ship.kni:32:5
Could not link next label "aft.airlock" at position examples/ship.kni:35:5
Could not link next label "forward.bridge.deck" at position examples/ship.kni:40:7
Could not link next label "forward.airlock" at position examples/ship.kni:42:7
internal story error
examples/space.kni:61:3: Expected "[]" brackets in option but got to the end of the block.