Update property-functions.md

Author: Colin Robertson

docs/msbuild/property-functions.md

@@ -194,7 +194,7 @@ In the .NET Framework versions 4 and 4.5, property functions can be used to eval
 |int BitwiseAnd(int first, int second)|Perform a bitwise `AND` on the first and second (first & second).|  
 |int BitwiseXor(int first, int second)|Perform a bitwise `XOR` on the first and second (first ^ second).|  
 |int BitwiseNot(int first)|Perform a bitwise `NOT` (~first).|  
-|bool IsOsPlatform(string platformString)|Specify whether the current OS platform is `platformString`. `platformString` must be a member of <xref:system.runtime.interopservices.osplatform>.|
+|bool IsOsPlatform(string platformString)|Specify whether the current OS platform is `platformString`. `platformString` must be a member of <xref:System.Runtime.InteropServices.OSPlatform>.|
 |bool IsOSUnixLike|True if current OS is a Unix system.|
 |string NormalizePath(params string[] path)|Gets the canonicalized full path of the provided path and ensures it contains the correct directory separator characters for the current operating system.|
 |string NormalizeDirectory(params string[] path)|Gets the canonicalized full path of the provided directory and ensures it contains the correct directory separator characters for the current operating system while ensuring it has a trailing slash.|