Refactor display Text (#1999)

### What problem does this PR solve?

'Api Key' and 'API Document' isn't aligned.

### Type of change

- [x] Refactoring

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

web/src/locales/en.ts

@@ -406,7 +406,7 @@ The above is the content you need to summarize.`,
       preview: 'Preview',
       embedded: 'Embedded',
       serviceApiEndpoint: 'Service API Endpoint',
-      apiKey: 'Api Key',
+      apiKey: 'API Key',
       apiReference: 'API Documents',
       dateRange: 'Date Range:',
       backendServiceApi: 'Backend service API',
@@ -664,7 +664,7 @@ The above is the content you need to summarize.`,
       bing: 'Bing',
       bingTip:
         'This component is used to get search result from https://www.bing.com/. Typically, it performs as a supplement to knowledgebases. Top N and Bing Subscription-Key specifies the number of search results you need to adapt.',
-      apiKey: 'Api Key',
+      apiKey: 'API Key',
       country: 'Country',
       language: 'Language',
       googleScholar: 'Google Scholar',