Update README.md

Author: wannaphong

README.md

@@ -24,7 +24,7 @@ PyThaiNLP เป็นไลบารีภาษาไพทอนสำหร
 
 | Version | Description | Status |
 |:------:|:--:|:------:|
-| [3.1](https://github.com/PyThaiNLP/pythainlp/releases) | Stable | [Change Log](https://github.com/PyThaiNLP/pythainlp/issues/643 |
+| [3.1](https://github.com/PyThaiNLP/pythainlp/releases) | Stable | [Change Log](https://github.com/PyThaiNLP/pythainlp/issues/643) |
 | [`dev`](https://github.com/PyThaiNLP/pythainlp/tree/dev) | Release Candidate for 3.2  | [Change Log](https://github.com/PyThaiNLP/pythainlp/issues/714) |