refactor 192

Author: fishercoder1534

README.md

@@ -768,6 +768,6 @@ Your ideas/fixes/algorithms are more than welcome!
 |195|[Tenth Line](https://leetcode.com/problems/tenth-line/)|[Solution](../master/shell/TenthLine.sh)| O(n)|O(1) | Easy|
 |194|[Transpose File](https://leetcode.com/problems/transpose-file/)|[Solution](../master/shell/TransposeFile.sh)| O(n^2)|O(n^2) | Medium|
 |193|[Valid Phone Numbers](https://leetcode.com/problems/valid-phone-numbers/)|[Solution](../master/shell/ValidPhoneNumbers.sh)| O(n)|O(1) | Easy|
-|192|[Word Frequency](https://leetcode.com/problems/word-frequency/)|[Solution](../master/shell/WordFrequency.sh)| O(n)|O(k) | Medium|
+|192|[Word Frequency](https://leetcode.com/problems/word-frequency/)|[Solution](../master/shell/_192.sh)| O(n)|O(k) | Medium|