Fix typos
Fix typos in security section.
-There are many ways to handle security, authentication and autorization.
+There are many ways to handle security, authentication and authorization.
And it normally is a complex and "difficult" topic.
@@ -14,9 +14,9 @@ If you don't care about any of these terms and you just need to add security wit
## OAuth2
-OAuth2 is a specification that defines several ways to handle authentication and autorization.
+OAuth2 is a specification that defines several ways to handle authentication and authorization.
-It is quite an extensive especification and covers several complex use cases.
+It is quite an extensive specification and covers several complex use cases.
It includes ways to authenticate using a "third party".
