Fix client/loading screens page links and formatting

Author: guilherme-gm

docs/client/loading-screens.md

@@ -1,7 +1,7 @@
 Loading screens are graphics, that are shown when the client is loading map data, before entering the game or while
 changing maps.
 
-They are located inside the [GRF](GRF "wikilink") in **data\texture\À¯ÀúÀÎÅÍÆäÀ̽º** (data\texture\유저인터페이스), must
+They are located inside the [GRF](./grf.md) in **data\texture\À¯ÀúÀÎÅÍÆäÀ̽º** (data\texture\유저인터페이스), must
 be of type JPEG and have to be called **loadingXX.jpg** where XX is a zero-based index (00, 01, 02...) and limited to
 about 6-12 files depending on langtype (unless you have diffed *Unlimited Loading Screens* option).
 
@@ -10,8 +10,6 @@ which causes certain quality loss. Try to avoid gradients, because the client re
 the image as well.
 
 ## See Also
-
-- [Loading Screen Creation Guide by naser080291](http://img292.imageshack.us/img292/8054/tutorialcz2.jpg)
-- [Login Background](Login_Background "wikilink")
+- [Login Background](./login-background.md)
 
 [Category:Client Configuration](Category:Client_Configuration "wikilink")