[12.x] Use fenced code blocks

cache.md

@@ -410,30 +410,38 @@ cache()->remember('users', $seconds, function () {
 
 Cache tags allow you to tag related items in the cache and then flush all cached values that have been assigned a given tag. You may access a tagged cache by passing in an ordered array of tag names. For example, let's access a tagged cache and `put` a value into the cache:
 
-    use Illuminate\Support\Facades\Cache;
+```php
+use Illuminate\Support\Facades\Cache;
 
-    Cache::tags(['people', 'artists'])->put('John', $john, $seconds);
-    Cache::tags(['people', 'authors'])->put('Anne', $anne, $seconds);
+Cache::tags(['people', 'artists'])->put('John', $john, $seconds);
+Cache::tags(['people', 'authors'])->put('Anne', $anne, $seconds);
+```
 
 <a name="accessing-tagged-cache-items"></a>
 ### Accessing Tagged Cache Items
 
 Items stored via tags may not be accessed without also providing the tags that were used to store the value. To retrieve a tagged cache item, pass the same ordered list of tags to the `tags` method, then call the `get` method with the key you wish to retrieve:
 
-    $john = Cache::tags(['people', 'artists'])->get('John');
+```php
+$john = Cache::tags(['people', 'artists'])->get('John');
 
-    $anne = Cache::tags(['people', 'authors'])->get('Anne');
+$anne = Cache::tags(['people', 'authors'])->get('Anne');
+```
 
 <a name="removing-tagged-cache-items"></a>
 ### Removing Tagged Cache Items
 
 You may flush all items that are assigned a tag or list of tags. For example, the following code would remove all caches tagged with either `people`, `authors`, or both. So, both `Anne` and `John` would be removed from the cache:
 
-    Cache::tags(['people', 'authors'])->flush();
+```php
+Cache::tags(['people', 'authors'])->flush();
+```
 
 In contrast, the code below would remove only cached values tagged with `authors`, so `Anne` would be removed, but not `John`:
 
-    Cache::tags('authors')->flush();
+```php
+Cache::tags('authors')->flush();
+```
 
 <a name="atomic-locks"></a>
 ## Atomic Locks