Add trailing whitespace to await

Author: stevapple

CodeGeneration/Sources/SyntaxSupport/KeywordSpec.swift

@@ -96,7 +96,7 @@ public let KEYWORDS: [KeywordSpec] = [
   KeywordSpec("autoclosure"),
   KeywordSpec("availability"),
   KeywordSpec("available"),
-  KeywordSpec("await"),
+  KeywordSpec("await", requiresTrailingSpace: true),
   KeywordSpec("backDeployed"),
   KeywordSpec("before"),
   KeywordSpec("block"),

Sources/SwiftBasicFormat/generated/BasicFormat.swift

@@ -285,6 +285,8 @@ open class BasicFormat: SyntaxRewriter {
       return true
     case .keyword(.async):
       return true
+    case .keyword(.await):
+      return true
     case .keyword(.`break`):
       return true
     case .keyword(.`case`):