hmm... @Gregg2: what happens when YOU try what you posted?
Where did you find a "Display As..." in any right-click menu?
Looks like you are missing a step or two (even if that would affect the dock icon for an application, which it won't... )
Have you tried relaunching the Dock?
(Open the Terminal app from the Utilities folder inside the Applications folder. Type in the following and then hit return:
killall Dock
Please note the command is case-sensitive. After running the command your dock should restart and appear normally.)