fix method name in CommaTests.swift

Author: ozumin

Tests/SwiftFormatTests/PrettyPrint/CommaTests.swift

@@ -105,7 +105,7 @@ final class CommaTests: PrettyPrintTestCase {
     assertPrettyPrintEqual(input: input, expected: expected, linelength: 20, configuration: configuration)
   }
 
-  func testArraySingleLineCommasPresentDisabled() {
+  func testArraySingleLineCommasPresentEnabled() {
     let input =
       """
       let MyCollection = [1, 2, 3,]
@@ -124,7 +124,7 @@ final class CommaTests: PrettyPrintTestCase {
     assertPrettyPrintEqual(input: input, expected: expected, linelength: 40, configuration: configuration)
   }
 
-  func testArraySingleLineCommasPresentEnabled() {
+  func testArraySingleLineCommasPresentDisabled() {
     let input =
       """
       let MyCollection = [1, 2, 3,]