[SourceKit] Test adjustments for improved formatting in BasicFormat

Companion of swiftlang/swift-syntax#2511

Author: ahoppen

test/SourceKit/Macros/syntactic_expansion.swift.expected

@@ -13,10 +13,10 @@ source.edit.kind.active:
 source.edit.kind.active:
   7:17-7:17 "{
     get {
-            _value.wrappedValue
+        _value.wrappedValue
       }
     set {
-            _value.wrappedValue = newValue
+        _value.wrappedValue = newValue
       }
 }"
 source.edit.kind.active:
@@ -89,10 +89,10 @@ source.edit.kind.active:
 source.edit.kind.active:
   7:17-7:17 "{
     get {
-            _value.wrappedValue
+        _value.wrappedValue
       }
     set {
-            _value.wrappedValue = newValue
+        _value.wrappedValue = newValue
       }
 }"
 source.edit.kind.active: