Fix: broken link in Batch Documentation

[jafreck]

Fix #2680

[azuresdkci]

Can one of the admins verify this patch?

[codecov-io]

Codecov Report

Merging #2681 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2681   +/-   ##
=======================================
  Coverage   55.88%   55.88%           
=======================================
  Files        7161     7161           
  Lines      150710   150710           
=======================================
  Hits        84228    84228           
  Misses      66482    66482

Impacted Files	Coverage Δ
...zure/batch/models/virtual_machine_configuration.py	100% <ø> (ø)	⬆️

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[matthchr]

Hi Jake -- can you fix this in Swagger instead? https://github.com/Azure/azure-rest-api-specs/blob/master/specification/batch/data-plane/Microsoft.Batch/stable/2018-03-01.6.1/BatchService.json#L13172