minor symfony#32800 Improve some URLs (Arman-Hosseini)

This PR was squashed before being merged into the 3.4 branch (closes symfony#32800).

Discussion
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Improve some URLs

| Q             | A
| ------------- | ---
| Branch?       | 3.4 <!-- see below -->
| Bug fix?      | no
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| BC breaks?    | no     <!-- see https://symfony.com/bc -->
| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->
| Fixed tickets | N/A   <!-- #-prefixed issue number(s), if any -->
| License       | MIT
| Doc PR        | N/A <!-- required for new features -->

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 - Bug fixes must be submitted against the lowest maintained branch where they apply
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 - Features and deprecations must be submitted against branch 4.4.
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Commits
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fab17a4 Improve some URLs

Encoder/JsonDecode.php

@@ -62,7 +62,7 @@ public function __construct($associative = false, $depth = 512)
      *
      * @throws NotEncodableValueException
      *
-     * @see http://php.net/json_decode json_decode
+     * @see https://php.net/json_decode
      */
     public function decode($data, $format, array $context = [])
     {

Normalizer/DateTimeNormalizer.php

@@ -90,7 +90,7 @@ public function denormalize($data, $class, $format = null, array $context = [])
 
         if (null !== $dateTimeFormat) {
             if (null === $timezone && \PHP_VERSION_ID < 70000) {
-                // https://bugs.php.net/bug.php?id=68669
+                // https://bugs.php.net/68669
                 $object = \DateTime::class === $class ? \DateTime::createFromFormat($dateTimeFormat, $data) : \DateTimeImmutable::createFromFormat($dateTimeFormat, $data);
             } else {
                 $object = \DateTime::class === $class ? \DateTime::createFromFormat($dateTimeFormat, $data, $timezone) : \DateTimeImmutable::createFromFormat($dateTimeFormat, $data, $timezone);