Correcected the typo and left a space between ## and the text

Author: ptprasanna

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-##[1.25.1] - 2022-09-09
+## [1.25.1] - 2022-09-09
 - Modified the code to fix the issue #62, which changed the condition to allow flen=64 for D extension tests.
 
 ## [1.25.0] - 2022-09-07