feat: #345 even if the backend data returns empty, the skeleton of the chart will be displayed. (#461)

… chart will be displayed.

### What problem does this PR solve?

feat: #345 even if the backend data returns empty, the skeleton of the
chart will be displayed.

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

web/src/locales/en.ts

@@ -349,19 +349,18 @@ export default {
         'This sets the maximum length of the model’s output, measured in the number of tokens (words or pieces of words).',
       quote: 'Show Quote',
       quoteTip: 'Should the source of the original text be displayed?',
-      overview: 'API',
+      overview: 'Chat Bot API',
       pv: 'Number of messages',
       uv: 'Active user number',
       speed: 'Token output speed',
       tokens: 'Consume the token number',
       round: 'Session Interaction Number',
       thumbUp: 'customer satisfaction',
-      publicUrl: 'Public URL',
       preview: 'Preview',
       embedded: 'Embedded',
       serviceApiEndpoint: 'Service API Endpoint',
       apiKey: 'Api Key',
-      apiReference: 'Api Reference',
+      apiReference: 'API Documents',
       dateRange: 'Date Range:',
       backendServiceApi: 'Backend service API',
       createNewKey: 'Create new key',