update docs

docs/collection-interfaces.md

@@ -47,8 +47,8 @@ $collection->add($item1)->add($item2);
 ### chunk
 
 ```php
-    /** @return self[]|static[] */
-    public function chunk(int $size): array
+/** @return self[]|static[] */
+public function chunk(int $size): array
 ```
 
 This method [mirrors the behavior of `array_chunk`](https://www.php.net/manual/function.array-chunk.php) and returns a zero indexed numeric array of the current Collection based on the chunk size provided.

docs/collection-trait.md

@@ -95,7 +95,7 @@ $collection->toArray();
 
 Internally it is call the `ArrayIterator::append` and returning the instance to allow fluent calls.
 
-### chunk
+## chunk
 
 This method [mirrors the behavior of `array_chunk`](https://www.php.net/manual/function.array-chunk.php) and returns a zero indexed numeric array of the current Collection based on the chunk size provided.
 
@@ -121,7 +121,7 @@ Finally, it will return the duplicated collection, optionally calling the `uniqu
 
 Internally, this method will iterate through each item of a collection, optionally rewind it at the end of the iteration, calling the anonymous function for each element.
 
-### eachChunk
+## eachChunk
 
 This method chunks the collection and executes the given anonymous function with each chunk.