switch requests examples to version with values

src/pages/tokens.mdx

@@ -262,16 +262,16 @@ curl -X POST https://api.netbird.io/api/users/{userId}/tokens \
 -H 'Accept: application/json' \
 -H 'Content-Type: application/json' \
 --data-raw '{
-  "name": "string",
-  "expires_in": "integer"
+  "name": "My first token",
+  "expires_in": 30
 }'
 ```
 
 ```js
 const axios = require('axios');
 let data = JSON.stringify({
-  "name": "string",
-  "expires_in": "integer"
+  "name": "My first token",
+  "expires_in": 30
 });
 let config = {
   method: 'post',
@@ -301,8 +301,8 @@ import json
 
 url = "https://api.netbird.io/api/users/{userId}/tokens"
 payload = json.dumps({
-  "name": "string",
-  "expires_in": "integer"
+  "name": "My first token",
+  "expires_in": 30
 })
 headers = {
   'Content-Type': 'application/json',
@@ -331,8 +331,8 @@ func main() {
   method := "POST"
   
   payload := strings.NewReader(`{
-  "name": "string",
-  "expires_in": "integer"
+  "name": "My first token",
+  "expires_in": 30
 }`)
   client := &http.Client {
   }
@@ -379,8 +379,8 @@ request["Accept"] = "application/json"
 request["Authorization"] = "Token <TOKEN>"
 
 request.body = JSON.dump({
-  "name": "string",
-  "expires_in": "integer"
+  "name": "My first token",
+  "expires_in": 30
 })
 response = https.request(request)
 puts response.read_body
@@ -391,8 +391,8 @@ OkHttpClient client = new OkHttpClient().newBuilder()
   .build();
 MediaType mediaType = MediaType.parse("application/json");
 RequestBody body = RequestBody.create(mediaType, '{
-  "name": "string",
-  "expires_in": "integer"
+  "name": "My first token",
+  "expires_in": 30
 }');
 Request request = new Request.Builder()
   .url("https://api.netbird.io/api/users/{userId}/tokens")
@@ -420,8 +420,8 @@ curl_setopt_array($curl, array(
   CURLOPT_CUSTOMREQUEST => 'POST',
   
   CURLOPT_POSTFIELDS =>'{
-  "name": "string",
-  "expires_in": "integer"
+  "name": "My first token",
+  "expires_in": 30
 }',
   CURLOPT_HTTPHEADER => array(
     'Content-Type: application/json',