Fix typo in train split name (#3751)

* Fix typo in README guide

* Fix split naming and table alignment in README guide

* Fix split naming and table alignment in all datasets

* Fix previously malformed dataset cards

* Fix previously malformed dataset cards

Commit from https://github.com/huggingface/datasets/commit/af6e54febe3b822118dfed28ddb797d8350e5d27

README.md

@@ -23,7 +23,7 @@ paperswithcode_id: null
 pretty_name: SharcModified
 ---
 
-# Dataset Card Creation Guide
+# Dataset Card for SharcModified
 
 ## Table of Contents
 - [Dataset Description](#dataset-description)
@@ -59,7 +59,14 @@ pretty_name: SharcModified
 
 ### Dataset Summary
 
-[More Information Needed]
+ShARC, a conversational QA task, requires a system to answer user questions based on rules expressed in natural language text.
+However, it is found that in the ShARC dataset there are multiple spurious patterns that could be exploited by neural models.
+SharcModified is a new dataset which reduces the patterns identified in the original dataset.
+To reduce the sensitivity of neural models, for each occurence of an instance conforming to any of the patterns,
+we automatically construct alternatives where we choose to either replace the current instance with an alternative
+instance which does not exhibit the pattern; or retain the original instance.
+The modified ShARC has two versions sharc-mod and history-shuffled.
+
 
 ### Supported Tasks and Leaderboards
 
@@ -154,9 +161,10 @@ Example of one instance:
 ### Data Splits
 
 The dataset is split into training and validation splits.
-|                            | Tain   | Valid |
-| -----                      | ------ | ----- |
-| N. Instances               | 7638   | 1355  |
+
+|              | train | validation |
+|--------------|------:|-----------:|
+| N. Instances |  7638 |       1355 |
 
 ## Dataset Creation
 
@@ -214,7 +222,7 @@ The dataset is split into training and validation splits.
 
 ### Licensing Information
 
-[More Information Needed]
+Unknown.
 
 ### Citation Information