Update CONTRIBUTING.MD 4: Reflect changes in RPCS3 (#974)

* Update CONTRIBUTING.md 3: auuuugggghhhh

More minor copyediting that i forgot to do until more than 6 months after i did my last pr lol

* Update CONTRIBUTING.md 4

Author: PorkchopGMX

CONTRIBUTING.md

@@ -41,7 +41,7 @@ guide we'll use `EBOOTlocalhost.elf`.
 
 Now, copy the `EBOOTlocalhost.elf` file to where you got your `EBOOT.elf` file from, and you're now good to go.
 
-To launch the game with the patched EBOOT, open up RPCS3, go to File, Boot SELF/ELF, and open up `EBOOTlocalhost.elf`.
+To launch the game with the patched EBOOT, open up RPCS3, go to File, Boot S(Elf), and open up `EBOOTlocalhost.elf`.
 
 Assuming you patched the file correctly, the database is migrated, and
 Project Lighthouse is running, the game should now connect, and you may begin contributing!