Correctly specify type of writeBundle hook in docs

[danimoh]

This PR contains:

• bugfix
• feature
• refactor
• documentation
• other

Are tests included?

• yes (bugfixes and features will not be merged without tests)
• no

Breaking Changes?

• yes (breaking changes will not be merged unless absolutely necessary)
• no

List any relevant issue numbers:
None

Description

In contrary to the documentation, the writeBundle hook for plugins is apparently called with two arguments, the first being the OutputOptions and the second the bundle.

[codecov]

Codecov Report

Merging #3441 into master will not change coverage by %.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3441   +/-   ##
=======================================
  Coverage   95.01%   95.01%           
=======================================
  Files         171      171           
  Lines        5841     5841           
  Branches     1723     1723           
=======================================
  Hits         5550     5550           
  Misses        157      157           
  Partials      134      134           

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[lukastaegert]

Thanks! Not sure how we could miss that 🙄