added colon

Author: KevinMarquette

README.md

@@ -147,7 +147,7 @@ Suppressing Rules
 =================
 
 You can suppress a rule by decorating a script/function or script/function parameter with .NET's [SuppressMessageAttribute](https://msdn.microsoft.com/en-us/library/system.diagnostics.codeanalysis.suppressmessageattribute.aspx).
-`SuppressMessageAttribute`'s constructor takes two parameters: a category and a check ID. Set the `categoryID` parameter to the name of the rule you want to suppress and set the `checkID` parameter to a null or empty string. You can optionally add a third named parameter with a justification for suppressing the message.
+`SuppressMessageAttribute`'s constructor takes two parameters: a category and a check ID. Set the `categoryID` parameter to the name of the rule you want to suppress and set the `checkID` parameter to a null or empty string. You can optionally add a third named parameter with a justification for suppressing the message:
 
 ``` PowerShell
 function SuppressMe()