Fix a spelling error

Author: sinn3r

modules/exploits/windows/misc/sap_netweaver_dispatcher.rb

@@ -20,7 +20,7 @@ def initialize(info = {})
 				service. The overflow occurs in the DiagTraceR3Info() function and allows a remote
 				attacker to execute arbitrary code by supplying a special crafted Diag packet. The
 				Dispatcher service is only vulnerable if the Developer Traces have been configured
-				at levels 2 or 3. The module has been succesfully tested on SAP Netweaver 7.0 EHP2
+				at levels 2 or 3. The module has been successfully tested on SAP Netweaver 7.0 EHP2
 				SP6 over Windows XP SP3 and Windows 2003 SP2 (DEP bypass).
 			},
 			'Author'      => [