Wizard: simplify custom maven repository syntax for Gradle

libraries/tools/new-project-wizard/new-project-wizard-cli/testData/buildFileGeneration/android/expected/build.gradle

@@ -3,9 +3,7 @@ buildscript {
         gradlePluginPortal()
         jcenter()
         google()
-        maven {
-            url 'KOTLIN_REPO'
-        }
+        maven('KOTLIN_REPO')
     }
     dependencies {
         classpath('org.jetbrains.kotlin:kotlin-gradle-plugin:KOTLIN_VERSION')
@@ -22,8 +20,6 @@ allprojects {
     repositories {
         google()
         mavenCentral()
-        maven {
-            url 'KOTLIN_REPO'
-        }
+        maven('KOTLIN_REPO')
     }
 }

libraries/tools/new-project-wizard/new-project-wizard-cli/testData/buildFileGeneration/android/expected/build.gradle.kts

@@ -3,9 +3,7 @@ buildscript {
         gradlePluginPortal()
         jcenter()
         google()
-        maven {
-            url = uri("KOTLIN_REPO")
-        }
+        maven("KOTLIN_REPO")
     }
     dependencies {
         classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:KOTLIN_VERSION")
@@ -22,8 +20,6 @@ allprojects {
     repositories {
         google()
         mavenCentral()
-        maven {
-            url = uri("KOTLIN_REPO")
-        }
+        maven("KOTLIN_REPO")
     }
 }

libraries/tools/new-project-wizard/new-project-wizard-cli/testData/buildFileGeneration/android/expected/settings.gradle

@@ -4,9 +4,7 @@ pluginManagement {
         jcenter()
         gradlePluginPortal()
         mavenCentral()
-        maven {
-            url 'KOTLIN_REPO'
-        }
+        maven('KOTLIN_REPO')
     }
 
 }

libraries/tools/new-project-wizard/new-project-wizard-cli/testData/buildFileGeneration/android/expected/settings.gradle.kts

@@ -4,9 +4,7 @@ pluginManagement {
         jcenter()
         gradlePluginPortal()
         mavenCentral()
-        maven {
-            url = uri("KOTLIN_REPO")
-        }
+        maven("KOTLIN_REPO")
     }
 
 }