Update modules/exploits/windows/misc/ivanti_avalanche_mdm_bof.rb

Co-authored-by: Christophe De La Fuente <[email protected]>

Author: EgeBalci

modules/exploits/windows/misc/ivanti_avalanche_mdm_bof.rb

@@ -19,7 +19,7 @@ def initialize(info = {})
           which could result in arbitrary code execution with the NT/AUTHORITY SYSTEM permissions.
           This vulnerability occurs during the processing of 3/5/8/100/101/102 item data types.
           The program tries to copy the item data using `qmemcopy` to a fixed size data buffer on stack.
-          Upon successfull exploitation the attacker gains full access to the target system.
+          Upon successful exploitation the attacker gains full access to the target system.
 
           This vulnerability has been tested against Ivanti Avalanche MDM v6.4.0.0 on Windows 10.
         },