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.