typo

Author: Gonzalo Garcia Leon

images/.DS_Store

@@ -73,7 +73,7 @@ The above JSON policy (on Intro), tells:
 profilepics/```
 
 ### The magic of team work.
-Phiber, from int3pids is one of our ID10Ts team collage, he was the first on start working on this challenge. When I woke up, he has some work done over the challenge as he realized **how to inject characters on the S3 policy** generated by the ```/signature``` controller. 
+Phiber, from int3pids is one of our ID10Ts team colleague, he was the first on start working on this challenge. When I woke up, he has some work done over the challenge as he realized **how to inject characters on the S3 policy** generated by the ```/signature``` controller. 
 
 - First he found the secret key which used to create the sign on the ```hmac``` parameter. This signs the ```acl``` parameter. The key was ```[object Object]```, literally.
 - Second, he was able to inject JSON strings on the ```acl``` parameter. Let's explain it.