build.gradle: Fix deprecated property syntax

Author: Juuxel

build.gradle

@@ -50,10 +50,10 @@ if (libs.versions.kotlin.get() != kotlinVersion) {
 
 repositories {
 	mavenCentral()
-	maven { url "https://maven.fabricmc.net/" }
-	maven { url "https://maven.architectury.dev/" }
+	maven { url = "https://maven.fabricmc.net/" }
+	maven { url = "https://maven.architectury.dev/" }
 	maven {
-		url "https://maven.minecraftforge.net/"
+		url = "https://maven.minecraftforge.net/"
 		content {
 			excludeGroupByRegex "org\\.eclipse\\.?.*"
 		}