Regenerate sources

Author: DougGregor

CodeGeneration/Sources/SyntaxSupport/gyb_generated/ExprNodes.swift

@@ -1160,7 +1160,7 @@ public let EXPR_NODES: [Node] = [
        ]),
 
   Node(name: "MacroExpansionExpr",
-       nameForDiagnostics: "macro expansion expression",
+       nameForDiagnostics: "macro expansion",
        kind: "Expr",
        traits: [
          "FreestandingMacroExpansion"

Sources/SwiftSyntax/generated/Misc.swift

@@ -1108,7 +1108,7 @@ extension SyntaxKind {
     case .macroExpansionDecl: 
       return "macro expansion"
     case .macroExpansionExpr: 
-      return "macro expansion expression"
+      return "macro expansion"
     case .matchingPatternCondition: 
       return "pattern matching"
     case .memberAccessExpr: