Align ancestors printouts (actual, expected) while validating ancestry

[GezimSejdiu]

Hi @kovetskiy ,

this tiny PR will just do a formating while printing out the expected ancestors while validating the ancestry tree.

Before

2021-02-02 08:23:19.164 FATAL unable to resolve page
                              └─ the page has fewer parents than expected
                                 ├─ title: Test Page
                                 ├─ actual: Parent1 > Parent2 > Parent3 > Parent4 > Parent5 > Parent6
                                 ├─ expected: Parent1>Parent2>Parent3>Parent4>Parent5>Parent6>Test Page
                                 └─ title: Test Page

After

2021-02-02 08:23:19.164 FATAL unable to resolve page
                              └─ the page has fewer parents than expected
                                 ├─ title: Test Page
                                 ├─ actual: Parent1 > Parent2 > Parent3 > Parent4 > Parent5 > Parent6
                                 ├─ expected: Parent1 > Parent2 > Parent3 > Parent4 > Parent5 > Parent6 > Test Page
                                 └─ title: Test Page

Best regards,

[kovetskiy]

Nice catch, thanks!