Addon-docs: Fix code style inside LI

[adrian-potepa]

Issue: #8651

What I did

I add 'code' styles to the list.

export const LI = styled.li<{}>(withReset, ({ theme }) => ({
  fontSize: theme.typography.size.s2,
  color: theme.color.defaultText,
  lineHeight: '24px',
  '& + li': {
    marginTop: '.25em',
  },
  '& ul, & ol': {
    marginTop: '.25em',
    marginBottom: 0,
  },
  '& code': codeCommon({ theme }),
}));

[vercel]

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