_portage: fix description typo

[benknoble]

I think this dates beyond the Git source; the furthest back I was willing to look is 383aa65#diff-be8282d1e3b3226ff1131924ec253bbb2e7ef939cd0fbeb05f631003e9c787d2R53.

[thesamesam]

Signed-off-by please?

[benknoble]

range-diff (git range-diff u/master origin/patch-1 patch-1): sign-off

1:  fbc5cf0 ! 1:  7ad4f9c _portage: fix description typo
    @@ Metadata
      ## Commit message ##
         _portage: fix description typo
     
    +    Signed-off-by: D. Ben Knoble <ben.knoble@gmail.com>
    +
      ## src/_portage ##
     @@ src/_portage: _ebuild () {
              'preinst[Run specific actions that need to be done before installation]'

Woops, thanks! Made this edit through GitHub's UI as a matter of convenience, which I almost never do.