Point About Discord at the standing invite

About still used an invite that expires. This points the Talk to us Discord button at the same standing invite README already uses.

Author: jatinkrmalik

Sources/VocaMac/Models/AboutSocialMark.swift

@@ -39,7 +39,7 @@ enum AboutSocialMark: String, CaseIterable, Identifiable {
         case .github:
             return URL(string: "https://github.com/VocaHQ/vocamac/issues")!
         case .discord:
-            return URL(string: "https://discord.gg/UMJduhcqn")!
+            return URL(string: "https://discord.gg/t6muquAJbm")!
         case .x:
             return URL(string: "https://x.com/vocahq")!
         case .mail:

Tests/VocaMacTests/AboutSocialMarkTests.swift

@@ -39,7 +39,7 @@ final class AboutSocialMarkTests: XCTestCase {
         )
         XCTAssertEqual(
             AboutSocialMark.discord.url.absoluteString,
-            "https://discord.gg/UMJduhcqn"
+            "https://discord.gg/t6muquAJbm"
         )
         XCTAssertEqual(AboutSocialMark.x.url.absoluteString, "https://x.com/vocahq")
         XCTAssertEqual(AboutSocialMark.mail.url.absoluteString, "mailto:hello@vocahq.com")