Update contributing to include valid discord test server invite

MEhrn00 · MEhrn00 · commit 11678d9526ae · 2022-01-04T14:33:23.000-05:00
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -27,4 +27,4 @@
 
 #### Join bot's test server to ask any query
 
-> https://discord.gg/b3nh6uR
+> https://discord.gg/SpUvheg5A5

Original file line number	Diff line number	Diff line change
`@@ -27,4 +27,4 @@`
`27`	`27`
`28`	`28`	`#### Join bot's test server to ask any query`
`29`	`29`
`30`		`-> https://discord.gg/b3nh6uR`
	`30`	`+> https://discord.gg/SpUvheg5A5`