[Example Config] Use class reference instead of self:: on code example config to ease copy paste config

[samsonasik]

Ref #6035 (review) as they are public constant to copy on configure rector, something like:

    $rectorConfig
        ->ruleWithConfiguration(BooleanInTernaryOperatorRuleFixerRector::class, [
-            self::TREAT_AS_NON_EMPTY => false,
+            BooleanInTernaryOperatorRuleFixerRector::TREAT_AS_NON_EMPTY => false,
        ]);

self just pointed to invalid target class on rector config.

[samsonasik]

All checks have passed 🎉 @TomasVotruba I am merging it ;)

[TomasVotruba]

We'll have to fix this in the tool, not enforce it here:)
Could you revert and fix it?

[samsonasik]

I don't understand, what tool? There is no example in generarted documentation now, in the past, we have example config in generated documentation, and that feature removed on symplify doc generator, so currently, user only can see example by read the config in the rules, so copy paste from there is needed to symplify DX

[samsonasik]

Reverting at #6038 btw, but I need explanation for this, as this was used for DX

[TomasVotruba]

Thanks 👍

I think we should solve this in the documentation, as other projects do. I rarely copy-paste any code from other projects internals. It's either documented or never used.