Fix invalid JSON data in template node (#2322)

packages/node_modules/@node-red/nodes/locales/de/function/80-template.html

@@ -36,8 +36,10 @@
   <pre> Hallo {{payload.name}}. Heute ist {{date}} </pre>
   <p> eine Nachricht empfangt, die folgendes enthält:
   <pre>{
-Datum: "Montag"
-Payload: { Name: "Fred"}
+  date: "Montag",
+  payload: {
+    name: "Fred"
+  }
 }</pre>
   <p> wird die resultierende Nachrich wie folgt sein:
   <pre> Hallo Fred. Heute ist Montag </pre>

packages/node_modules/@node-red/nodes/locales/en-US/function/80-template.html

@@ -36,7 +36,7 @@
     <pre>Hello {{payload.name}}. Today is {{date}}</pre>
     <p>receives a message containing:
     <pre>{
-  date: "Monday"
+  date: "Monday",
   payload: {
     name: "Fred"
   }

packages/node_modules/@node-red/nodes/locales/ja/function/80-template.html

@@ -34,9 +34,9 @@
     <pre>こんにちは{{payload.name}}さん。今日は{{date}}です。</pre>
     <p>というテンプレートに対して、
     <pre>{
-  date: "月曜日"
+  date: "月曜日",
   payload: {
-    name: "山田",
+    name: "山田"
   }
 }</pre>
     <p>というメッセージを受信した場合、</p>

packages/node_modules/@node-red/nodes/locales/ko/function/80-template.html

@@ -34,9 +34,9 @@
     <pre>안녕하세요, {{payload.name}}씨. 오늘은 {{date}}입니다.</pre>
     <p>라는 템플릿에 대해,
     <pre>{
-  date: "월요일"
+  date: "월요일",
   payload: {
-    name: "홍길동",
+    name: "홍길동"
   }
 }</pre>
     <p>이라는 메세지를 수신한 경우,</p>