small language fix

README.md

@@ -103,7 +103,7 @@ One line in train.json looks like this:
 ### Version B
 This verison does not contain the audio encoded in the dataset. Instead it has the audio files placed in sub-directories. There are currently both samples in clips_48k_wav and clips_16k_mp3. Only the base filename is referred in the dataset. Please not that there are both sentence-based audio clips as well at meeting-based audio clips. The dataset contains referrals to both, the latter referral has start and stop time as well.
 
-One line in the metadata.json looks like this:
+One line in the train/metadata.json looks like this:
 ```json
 {
   "meeting_date": "20170207",