Update apko/private/apko_lock.bzl

Co-authored-by: Jon Johnson <jonjohnsonjr@gmail.com>
Signed-off-by: Piotr Tabor (ptab) <132376425+sfc-gh-ptabor@users.noreply.github.com>
Signed-off-by: Mateusz Hazy <mateusz.hazy@snowflake.com>

apko/private/apko_lock.bzl

@@ -58,7 +58,7 @@ _apko_lock = rule(
 def apko_lock(name, config, lockfile_name):
  """Generates executable rule for producing apko lock files.
 
- When run, the rule will output the lockfile to the lockfilename in the directory of the package where the rule is defined.
+ When run, the rule will output the lockfile to the lockfile_name in the directory of the package where the rule is defined.
  That is, if you define `apko_lock` in `foo/bar/BUILD.bazel` with `lockfile_name="baz.lock.json` the rule will output the lock into
  `foo/bar/baz.lock.json`.