Replace YAML keys from int to str

Replace YAML metadata integer keys with strings, as the Hub does not support integers.
See: https://github.com/huggingface/datasets/issues/5275

README.md

@@ -16,7 +16,6 @@ source_datasets:
 task_categories:
 - text-classification
 task_ids: []
-paperswithcode_id: null
 pretty_name: JournalistsQuestions
 tags:
 - question-identification
@@ -28,8 +27,8 @@ dataset_info:
     dtype:
       class_label:
         names:
-          0: 'no'
-          1: 'yes'
+          '0': 'no'
+          '1': 'yes'
   - name: label_confidence
     dtype: float32
   config_name: plain_text