It's just an html (documentation) file. Unless you actually want to access the html documentation, you could consider disabling this aspect of the 'ppm install' process.
For one way to do that, see Re: skipping html generation while pkg installation using ppm

Cheers,
Rob

In reply to Re: CPAN-Meta and ExtUtils-MakeMaker Conflict? by syphilis
in thread CPAN-Meta and ExtUtils-MakeMaker Conflict? by jgamble

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