update config of README to address schema mismatch issue

README.md

@@ -1,17 +1,17 @@
 ---
 license: cc-by-4.0
 configs:
-- config_name: 22khz
+- config_name: manifest
   data_files:
-  - split: manifest
+  - split: 22khz
     path: "22khz/manifest_22khz.json"
-  - split: chapters
-    path: "22khz/chapters_22khz.json"
-- config_name: 44khz
-  data_files:
-  - split: manifest
+  - split: 44khz
     path: "44khz/manifest_44khz.json"
-  - split: chapters
+- config_name: chapters
+  data_files:
+  - split: 22khz
+    path: "22khz/chapters_22khz.json"
+  - split: 44khz
     path: "44khz/chapters_44khz.json"
 ---