[dvsim] Bug fix in LintCfg.py
[dvsim] Bug fix in LintCfg.py

- `results_page` referenced on line 226 needs to be qualified with
`self`

Signed-off-by: Srikrishna Iyer <2803d640feace36379942447842f26c7747b4dc3@google.com>

lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan