Update index.md

Author: TheCoderSingh

index.md

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 ### Go to https://thecodersingh.github.io/Leetcode-Javascript-Solutions/
 
-| # | Title | Description | Solution |
-| --- | --- | --- | --- |
+| # | Title | Description | Solution
+| --- | --- | --- | ---
 | 1 | Two Sum | Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have exactly one solution, and you may not use the same element twice. | [Solution](twosum.js)
 | 7 | Reverse Integer | Given a 32-bit signed integer, reverse digits of an integer. | [Solution](reverse_integer.js) |
 | 8 | String to Integer (atoi) | Implement atoi which converts a string to an integer. | [Solution](string_to_integer.js) |