Fixed typo

rules/windows/sysmon/sysmon_susp_certutil_command.yml

@@ -1,6 +1,6 @@
 title: Suspicious Certutil Command
 status: experimental
-description: Detetcs a suspicious Microsoft certutil execution with sub commands like 'decode' sub command, which is sometimes used to decode malicious code with the built-in certutil utility
+description: Detects a suspicious Microsoft certutil execution with sub commands like 'decode' sub command, which is sometimes used to decode malicious code with the built-in certutil utility
 author: Florian Roth, juju4
 references:
     - https://twitter.com/JohnLaTwC/status/835149808817991680