I'm new to all of this honestly, I'm not even sure if i'm asking the question correctly. Basically I have a LAMP server setup to run mediawiki. I can get to by typing localhost/Wiki but I'd to only have to use localhost and it take me to the Main page of the wiki. Right now when I type it I just get a file browser (I removed the default apache2 index.html from /var/www/html. Another note to add is my Wiki index.php is under /var/www/html/Wiki/index.php. Let me know if this question is understandable as I am new.
Thanks for your time!
You need to set up URL rewriting (which is a way to tell the webserver how to translate the URL into a file system path - the default is something like <URL path> -> /var/www/html/<URL path> but you can do almost anything with the right configuration). There is a MediaWiki URL rewriting guide but if your wiki is accessible from the internet it's easier to use the Redwerks short URL builder.