Fixes #3014 (#5221)

Co-authored-by: TylerMSFT <[email protected]>
Co-authored-by: prmerger-automator[bot] <40007230+prmerger-automator[bot]@users.noreply.github.com>

Author: 3 people

docs/build/reference/description-blocks.md

@@ -156,7 +156,7 @@ In this example, UPDATE is a pseudotarget.
 
 ```makefile
 UPDATE : *.*
-!COPY $** c:\product\release
+COPY $** c:\product\release
 ```
 
 When UPDATE is evaluated, NMAKE copies all files in the current directory to the specified drive and directory.