Correct NewEnterpriseClient deprecation message

[oschwald]

No description provided.

[google-cla]

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[WillAbides]

This was my mistake. Thank you for finding and fixing it.

[oschwald]

I signed the CLA.

[WillAbides]

I signed the CLA.

Thanks. Just to set your expectations, the primary maintainer is out this week, so there is a good chance this won't get a second review or be merged for a week or so.

[codecov]

Codecov Report

Merging #2923 (544b427) into master (fd33b81) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2923   +/-   ##
=======================================
  Coverage   98.17%   98.17%           
=======================================
  Files         143      143           
  Lines       12609    12609           
=======================================
  Hits        12379    12379           
  Misses        156      156           
  Partials       74       74           

Files Changed	Coverage Δ
github/github.go	98.11% <ø> (ø)

[gmlewis]

Thank you, @oschwald and @WillAbides !
LGTM.
Merging.