resolves #899 replace dynamic import (unsupported by VS code)

src/features/antora/antoraSupport.ts

@@ -8,6 +8,8 @@ import * as nls from 'vscode-nls'
 import ContentCatalog from '@antora/content-classifier/content-catalog'
 import { getWorkspaceFolder } from '../../util/workspace'
 import { dir, exists } from '../../util/file'
+import * as contentClassifier from '@antora/content-classifier'
+const classifyContent = contentClassifier.default || contentClassifier
 
 const MAX_DEPTH_SEARCH_ANTORA_CONFIG = 100
 const localize = nls.loadMessageBundle()
@@ -316,10 +318,6 @@ export async function getAntoraDocumentContext (textDocumentUri: Uri, workspaceS
           files,
         }
       })))
-    let classifyContent = await import('@antora/content-classifier')
-    if ('default' in classifyContent) {
-      classifyContent = classifyContent.default // default export
-    }
     const contentCatalog = await classifyContent({
       site: {},
     }, contentAggregate)