Fix: consistencies with docs default and rule

[anikethsaha]

Prerequisites checklist

• I have read the contributing guidelines.
• The team has reached consensus on the changes proposed in this pull request. If not, I understand that the evaluation process will begin with this pull request and won't be merged until the team has reached consensus.

What is the purpose of this pull request? (put an "X" next to an item)

[ ] Documentation update
[X] Bug fix (template)
[ ] New rule (template)
[ ] Changes an existing rule (template)
[ ] Add autofixing to a rule
[ ] Add a CLI option
[ ] Add something to the core
[ ] Other, please explain:

There is an inconsistency with the default mentioned in docs and in the rule schema for rule

• use-isnan
• computed-property-spacing

What changes did you make? (Give an overview)

• use-isnan: In docs check the enforceForSwitchCase which is mentioned false in docs but true in rule schema

• computed-property-spacing : In docs check the enforceForClassMembers which is mentioned as false in docs but true in rule schema

I did change the rule schema and the required tests as the docs were correct in there place.

Is there anything you'd like reviewers to focus on?

This was noticed when I was working in this #13034

[mdjermanovic]

These default values were recently changed in #12913 and #12915. The new defaults will apply starting from v7.0.0

Documentation is also updated for v7.0.0:

• https://eslint.org/docs/7.0.0/rules/use-isnan
• https://eslint.org/docs/7.0.0/rules/computed-property-spacing

So, the actual code in master is correct.

Links on https://eslint.org/docs/rules/ are for v6.8.0