message: Fixed a single typo
diff: @@ -37,7 +37,7 @@ of the default `pkg`.
  The `build` command accepts an optional profile argument: one of `--dev`,
  `--profiling`, or `--release`. If none is supplied, then `--release` is used.
  -Th controls whether debug assertions are enabled, debug info is generated, and
  +This controls whether debug assertions are enabled, debug info is generated, and
  which (if any) optimizations are enabled.
  | Profile | Debug Assertions | Debug Info | Optimizations | Notes |
  