Fix typo

[mgrachev]

No description provided.

[GordonTheTurtle]

Please sign your commits following these rules:
https://github.com/moby/moby/blob/master/CONTRIBUTING.md#sign-your-work
The easiest way to do this is to amend the last commit:

$ git clone -b "patch-1" git@github.com:mgrachev/distribution.git somewhere
$ cd somewhere
$ git commit --amend -s --no-edit
$ git push -f

Amending updates the existing PR. You DO NOT need to open a new one.

[dmcgowan]

Please sign the commit, all commits must be signed to get CI to pass

[mgrachev]

@dmcgowan Done.

[codecov]

Codecov Report

Merging #2734 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2734   +/-   ##
=======================================
  Coverage   60.28%   60.28%           
=======================================
  Files         103      103           
  Lines        8003     8003           
=======================================
  Hits         4825     4825           
  Misses       2536     2536           
  Partials      642      642

Flag	Coverage Δ
#linux	60.28% <ø> (ø)	⬆️

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