Update credits link for artist Yilx (#2307)

Author: CarlosGuzman01

play.pokemonshowdown.com/js/storage.js

@@ -99,7 +99,7 @@ Storage.bg = {
 				break;
 			case 'waterfall':
 				hues = ["119.31034482758622,37.66233766233767%", "184.36363636363635,23.012552301255226%", "108.92307692307692,37.14285714285714%", "70.34482758620689,20.567375886524818%", "98.39999999999998,36.76470588235296%", "140,38.18181818181818%"];
-				attrib = '<a href="https://yilx.deviantart.com/art/Irie-372292729" target="_blank" class="subtle">"Irie" <small>background by Samuel Teo</small></a>';
+				attrib = '<a href="https://x.com/Yilxaevum" target="_blank" class="subtle">"Irie" <small>background by Samuel Teo</small></a>';
 				break;
 			case 'shaymin':
 				hues = ["39.000000000000064,21.7391304347826%", "170.00000000000003,2.380952380952378%", "157.5,11.88118811881188%", "174.78260869565216,12.041884816753928%", "185.00000000000003,12.76595744680851%", "20,5.660377358490567%"];

play.pokemonshowdown.com/src/client-core.ts

@@ -273,7 +273,7 @@ const PSBackground = new class extends PSStreamModel {
 				"140,38.18181818181818%",
 			];
 			attrib = {
-				url: 'https://yilx.deviantart.com/art/Irie-372292729',
+				url: 'https://x.com/Yilxaevum',
 				title: 'Irie',
 				artist: 'Samuel Teo',
 			};

pokemonshowdown.com/credits.php

@@ -132,7 +132,7 @@
 				<li><p><a href="https://lit.link/en/seiryuuden" target="_blank" class="subtle"><strong>Jessica Valencia</strong> [seiryuuden]</a> <small>&ndash; Art (Charizards background)</small></p></li>
 				<li><p><a href="http://kyle-dove.deviantart.com/" target="_blank" class="subtle"><strong>Kyle Dove</strong></a> <small>&ndash; Art (battle backdrops)</small></p></li>
 				<li><p><a href="http://vtas.deviantart.com/" target="_blank" class="subtle"><strong>Vivian Zou</strong> [Vtas]</a> <small>&ndash; Art (Horizon background)</small></p></li>
-				<li><p><strong>Samuel Teo</strong> [Yilx] <small>&ndash; Art (Waterfall background)</small></p></li>
+				<li><p><a href="https://x.com/Yilxaevum" target="_blank" class="subtle"><strong>Samuel Teo</strong> [Yilx]</a> <small>&ndash; Art (Waterfall background)</small></p></li>
 				<li><p><a href="http://quanyails.deviantart.com/" target="_blank" class="subtle">[<strong>Quanyails</strong>]</a> <small>&ndash; Art (Ocean background)</small></p></li>
 				<li><p><a href="http://smogon.com/forums/threads/3486712/" target="_blank" class="subtle"><strong>X/Y</strong></a> and <a href="http://www.smogon.com/forums/threads/3577711/" target="_blank" class="subtle"><strong>Sun/Moon Sprite Projects</strong></a> led by <strong>Ian Clail</strong> [Layell]<small>&ndash; Sprites</small></p></li>
 				<li><p><a href="http://www.smogon.com/forums/threads/3577711/" target="_blank" class="subtle"><strong>Sun/Moon</strong></a> and <a href="https://www.smogon.com/forums/threads/3647722/" target="_blank" class="subtle"><strong>Sword/Shield Sprite Projects</strong></a> led by [<strong>leparagon</strong>] <small>&ndash; Sprites</small></p></li>