Merge pull request #869 from GlebkaF/patch-1

Fix typo: Bbefore -> Before

Author: Naktibalda

docs/AdvancedUsage.md

@@ -318,9 +318,9 @@ class PageCest
 
 ## Before/After Attributes 
 
-You can control execution flow with `#[Bbefore]` and `#[After]` attributes. You may move common actions
+You can control execution flow with `#[Before]` and `#[After]` attributes. You may move common actions
 into protected (non-test) methods and invoke them before or after the test method by putting them into attributes.
-It is possible to invoke several methods by using more than one `#[Bbefore]` or `#[After]` attribute.
+It is possible to invoke several methods by using more than one `#[Before]` or `#[After]` attribute.
 Methods are invoked in order from top to bottom.
 
 ```php