Changing computer name from MacBook to Mini after migration

I recent got a new MacMini.  I used the Migration feature to transfer everything from my old MacBook Air to the Mini.  Now, I have a new, annoying little situation.  The Mini’s name seems to be MacBook Air.  My Desktop and most of my files are listed as if they are located on the MacBook.  Everything works perfectly, it’s just kinda annoying me a little.  Can I change this to from MacBook to Mini?

See my Desktop info below:

[Re-Titled by Moderator]