Update extension.yaml

Author: fredzqm

firestore-bigquery-export/extension.yaml

@@ -104,8 +104,8 @@ params:
     validationErrorMessage: >
       BigQuery dataset IDs must be alphanumeric (plus underscores) and must be no more than
       1024 characters.
-    default: ext_exported_collection
-    example: ext_exported_collection
+    default: firestore_export
+    example: firestore_export
     required: true
 
   - param: TABLE_ID
@@ -119,6 +119,6 @@ params:
     validationErrorMessage: >
       BigQuery table IDs must be alphanumeric (plus underscores) and must be no more than
       1024 characters.
-    default: ext_exported_collection_table
-    example: ext_exported_collection_table
+    default: posts
+    example: posts
     required: true