Remove trailing / for consistency

Author: stennie

en/how_the_internet_works/README.md

@@ -19,7 +19,7 @@ We drew you a picture! It looks like this:
 
 ![Figure 1.1](images/internet_1.png)
 
-Looks like a mess, right? In fact it is a network of connected machines (the above mentioned *servers*). Hundreds of thousands of machines! Many, many kilometers of cables around the world! You can visit a Submarine Cable Map website (http://submarinecablemap.com/) to see how complicated the net is. Here is a screenshot from the website:
+Looks like a mess, right? In fact it is a network of connected machines (the above mentioned *servers*). Hundreds of thousands of machines! Many, many kilometers of cables around the world! You can visit a Submarine Cable Map website (http://submarinecablemap.com) to see how complicated the net is. Here is a screenshot from the website:
 
 ![Figure 1.2](images/internet_3.png)