Minor cosmetic changes to readme

Made minor cosmetic changes to readme in section Keys (items)

README.md

@@ -51,11 +51,11 @@ The dataset is divided into training and test splits:
 
 ### Keys (items)
 
-  `session_id`: "session_ge1nse2c",
-  `words": Transcription corresponding to t
-  `start_time`: Start time in second.
-  `end_time`: End time in second.
-  `speaker`: Speaker tagging in string: "speaker<N>"
+- `session_id`: "session_ge1nse2c",
+- `words`: Transcription corresponding to t
+- `start_time`: Start time in second.
+- `end_time`: End time in second.
+- `speaker`: Speaker tagging in string "speaker\<N\>"
 
 ### Source Datasets