[charles] Fixed markdown syntax on links

Debugging-Https-bugs-using-Charles.md

@@ -1,4 +1,4 @@
-(Charles)[https://www.charlesproxy.com] is a web debugging proxy that allows to 
+[Charles](https://www.charlesproxy.com) is a web debugging proxy that allows to 
 sniff the http communications with a remote server. Charles is a good tool to 
 use to be able to debug possible issues with the network stack, specially the 
 HttpClient and one of its implementations.
@@ -12,7 +12,7 @@ for debugging https calls.
 
 You can start using Charles with its trial license which will provide you with a copy of the application that limits the amount of time the application will run. Of course, if you do find the software we recommend you to get a license ;)
 
-The application downloads can be found (here)[https://www.charlesproxy.com/download/]
+The application downloads can be found [here](https://www.charlesproxy.com/download).
 
 # Installing the ssl proxy