add 4.9.10 community release date

_data/nav.yml

@@ -493,7 +493,7 @@
 
 - url: "changelog"
   pages:
-  - url: "#Version 4.9.10 April xx, 2020"
+  - url: "#Version 4.9.10 April 23, 2020"
   - url: "#Version 4.9.9 March 25, 2020"
   - url: "#Version 4.9.8 January 28, 2020"
   - url: "#Version 4.9.7 December 19, 2019"

changelog.md

@@ -8,7 +8,7 @@ class: changelog
 
 {% capture changelog %}
 
-## Version 4.9.10 April xx, 2020
+## Version 4.9.10 April 23, 2020
 * Fixed an issue where the editor selection could end up inside a short ended element (eg br).
 * Fixed a security issue related to CDATA sanitization during parsing.
 * Fixed `media` embed content not processing safely in some cases.