Update CHANGELOG.md

Author: FeodorFitsner

CHANGELOG.md

@@ -2,9 +2,9 @@
 
 ## [0.7.1](https://pypi.org/project/pglet/0.7.1) - Feb 22, 2022
 
-* Border styling props in Stack, Text, Image and IFrame allow either single value or a list by @FeodorFitsner in https://github.com/pglet/pglet-python/pull/68
-* All boolean control props have default values by @FeodorFitsner in https://github.com/pglet/pglet-python/pull/69
-* Control Refs by @FeodorFitsner in https://github.com/pglet/pglet-python/pull/70
+* [#68](https://github.com/pglet/pglet-python/pull/68) Border styling props in Stack, Text, Image and IFrame allow either single value or a list
+* [#69](https://github.com/pglet/pglet-python/pull/69) All boolean control props have default values
+* [#70](https://github.com/pglet/pglet-python/pull/70) Control Refs
 
 
 ## [0.7.0](https://pypi.org/project/pglet/0.7.0) - Feb 17, 2022