Non-static method DOMDocument::loadHTML() can be called statically

[staabm]

closes phpstan/phpstan#2759

expected test failure without the src/ change:

2) PHPStan\Rules\Methods\CallStaticMethodsRuleTest::testCallStaticMethods
Failed asserting that two strings are identical.
--- Expected
+++ Actual
@@ @@
 328: Call to static method doFoo() on an unknown class CallStaticMethods\TraitWithStaticMethod.
     💡 Learn more at https://phpstan.org/user-guide/discovering-symbols
 344: Call to an undefined static method static(CallStaticMethods\CallWithStatic)::nonexistent().
+352: Static call to instance method DOMDocument::loadHTML().
 '

/Users/staabm/workspace/phpstan-src/src/Testing/RuleTestCase.php:153
/Users/staabm/workspace/phpstan-src/tests/PHPStan/Rules/Methods/CallStaticMethodsRuleTest.php:40

[ondrejmirtes]

Thank you.