minor #40786 [Serializer][Validator] Update some phpDoc relative to "getters" (guilliamxavier)

This PR was squashed before being merged into the 4.4 branch.

Discussion
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[Serializer][Validator] Update some phpDoc relative to "getters"

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | yesish (phpDoc unaccurate after code updates)
| New feature?  | no
| Deprecations? | no
| Tickets       |
| License       | MIT
| Doc PR        |

Commits
-------

5046500deb [Serializer][Validator] Update some phpDoc relative to "getters"

src/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.php

@@ -61,7 +61,7 @@ class GetSetMethodNormalizer extends AbstractObjectNormalizer
     }
 
     /**
-     * Checks if the given class has any get{Property} method.
+     * Checks if the given class has any getter method.
      */
     private function supports(string $class): bool
     {
@@ -77,7 +77,7 @@ class GetSetMethodNormalizer extends AbstractObjectNormalizer
     }
 
     /**
-     * Checks if a method's name is get.* or is.*, and can be called without parameters.
+     * Checks if a method's name matches /^(get|is|has).+$/ and can be called non-statically without parameters.
      */
     private function isGetMethod(\ReflectionMethod $method): bool
     {

src/Symfony/Component/Validator/Mapping/ClassMetadata.php

@@ -237,7 +237,7 @@ class ClassMetadata extends GenericMetadata implements ClassMetadataInterface
      * Adds a constraint to the getter of the given property.
      *
      * The name of the getter is assumed to be the name of the property with an
-     * uppercased first letter and either the prefix "get" or "is".
+     * uppercased first letter and the prefix "get", "is" or "has".
      *
      * @param string $property The name of the property
      *

src/Symfony/Component/Validator/Mapping/GetterMetadata.php

@@ -18,7 +18,7 @@ use Symfony\Component\Validator\Exception\ValidatorException;
  * method.
  *
  * A property getter is any method that is equal to the property's name,
- * prefixed with either "get" or "is". That method will be used to access the
+ * prefixed with "get", "is" or "has". That method will be used to access the
  * property's value.
  *
  * The getter will be invoked by reflection, so the access of private and