Typo
Typo

Closes #43
https://github.com/cuelang/cue/pull/43

GitOrigin-RevId: cf5c83e96d8a3844ae50566372937e7ff8471dbc
Change-Id: Icc938e4bcdc317af2952cff61d76748dda9205b9
Reviewed-on: https://cue-review.googlesource.com/c/cue/+/2060
Reviewed-by: Marcel van Lohuizen <a22d082192f3ccf984644a4f482781f4c2d65180@google.com>

cuelang/cue