Fill in release date for 2.6.1

CHANGELOG.txt

@@ -14,7 +14,7 @@ Changelog
  * Fix: Prevent exception when deleting a model with a protected One-to-one relationship (Neal Todd)
 
 
-2.6.1 (xx.xx.xxxx) - IN DEVELOPMENT
+2.6.1 (05.08.2019)
 ~~~~~~~~~~~~~~~~~~
 
  * Fix: Prevent Javascript errors caused by unescaped quote characters in translation strings (Matt Westcott)

docs/releases/2.6.1.rst

@@ -1,6 +1,6 @@
-============================================
-Wagtail 2.6.1 release notes - IN DEVELOPMENT
-============================================
+===========================
+Wagtail 2.6.1 release notes
+===========================
 
 .. contents::
     :local: