minor symfony#30552 Fixed typo (lyrixx)

This PR was merged into the 4.3-dev branch.

Discussion
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Fixed typo

| Q             | A
| ------------- | ---
| Branch?       | master
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        |

Commits
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82bb4ae Fixed typo

Author: nicolas-grekas

UPGRADE-4.3.md

@@ -14,7 +14,7 @@ Cache
 
  * The `psr/simple-cache` dependency has been removed - run `composer require psr/simple-cache` if you need it.
  * Deprecated all PSR-16 adapters, use `Psr16Cache` or `Symfony\Contracts\Cache\CacheInterface` implementations instead.
- * Deprecated `SimpleCacheAdapter`, use `Psr16Adapter instead.
+ * Deprecated `SimpleCacheAdapter`, use `Psr16Adapter` instead.
 
 Config
 ------

UPGRADE-5.0.md

@@ -15,7 +15,7 @@ Cache
 
  * Removed `CacheItem::getPreviousTags()`, use `CacheItem::getMetadata()` instead.
  * Removed all PSR-16 adapters, use `Psr16Cache` or `Symfony\Contracts\Cache\CacheInterface` implementations instead.
- * Removed `SimpleCacheAdapter`, use `Psr16Adapter instead.
+ * Removed `SimpleCacheAdapter`, use `Psr16Adapter` instead.
 
 Config
 ------