Fixed misnamed contract initializer (#2650)

References:
https://github.com/adambard/learnxinyminutes-docs/issues/2642

solidity.html.markdown

@@ -62,7 +62,7 @@ contract SimpleBank { // CapWords
     event LogDepositMade(address accountAddress, uint amount);
 
     // Constructor, can receive one or many variables here; only one allowed
-    function AcmeBank() {
+    function SimpleBank() {
         // msg provides details about the message that's sent to the contract
         // msg.sender is contract caller (address of contract creator)
         owner = msg.sender;