Fix typos

Author: Ahmed TAILOULOUTE

components/cache/cache_invalidation.rst

@@ -7,7 +7,7 @@ Cache Invalidation
 
 Cache invalidation is the process of removing all cached items related to a
 change in the state of your model. The most basic kind of invalidation is direct
-items deletion. But when the state of a primary resource has spread accross
+items deletion. But when the state of a primary resource has spread across
 several cached items, keeping them in sync can be difficult.
 
 The Symfony Cache component provides two mechanisms to help solving this problem:

workflow.rst

@@ -7,7 +7,7 @@ a user submits a series of different forms to complete a task. Such processes ar
 best kept away from your models and should be defined in configuration.
 
 A **definition** of a workflow consist of places and actions to get from one
-place to another. The actions are called **transistions**. A workflow does also
+place to another. The actions are called **transitions**. A workflow does also
 need to know each object's position in the workflow. That **marking store** writes
 to a property of the object to remember the current place.