chore: fix update script to revert code format (#191)

Author: ota-meshi

scripts/update-unicode-properties.ts

@@ -269,24 +269,26 @@ function makeClassDeclarationCode(versions: string[]): string {
     const fields = versions
         .map(
             (v) =>
-                `private _raw${v}: string\nprivate _set${v}: Set<string> | undefined`,
+                `private _raw${v}: string\n\nprivate _set${v}: Set<string> | undefined`,
         )
-        .join("\n")
+        .join("\n\n")
     const parameters = versions.map((v) => `raw${v}: string`).join(", ")
     const init = versions.map((v) => `this._raw${v} = raw${v}`).join("\n")
     const getters = versions
         .map(
             (v) =>
                 `public get es${v}(): Set<string> { return this._set${v} ?? (this._set${v} = new Set(this._raw${v}.split(" "))) }`,
         )
-        .join("\n")
+        .join("\n\n")
 
     return `
         class DataSet {
             ${fields}
+
             public constructor(${parameters}) {
                 ${init}
             }
+
             ${getters}
         }
     `