Merge pull request #246 from HugoDoyon/patch-18

Fix

03_how_ln_works.asciidoc

@@ -340,7 +340,7 @@ How do you not catch a cheat? If you don't do any of the above you will be vulne
 
 Every payment on the Lightning Network starts with a person who wants to receive bitcoins issuing an invoice.
 An invoice is nothing more than a simple payment instruction containing various pieces of information such as a unique payment identifier, called a payment hash, a recipient, an amount, etc.
-The main reason for this process is that it helps to make the payment process over a path of payement channels atomic.
+The main reason for this process is that it helps to make the payment process over a path of payment channels atomic.
 Atomic means that no node on the path can decide to take the money that is being routed or stop the routing process.
 The payment will either be transferred successfully through the complete path of nodes or will not be delivered at all.
 There are no such things as a partial payment or a half successful payment.