(DOCSP-21788) Charts 1.31, 1.31.1 release notes (#528)

* (DOCSP-21788) Charts 1.31, 1.31.1 release notes

Author: zach-carr

source/release-notes.txt

@@ -10,6 +10,37 @@ MongoDB Charts Cloud Release Notes
    :depth: 1
    :class: twocols
 
+|charts| v1.31.1
+----------------
+
+*Released April 1, 2022*
+
+Bug fixes in this release:
+
+- Downloading a CSV file now works correctly for unbinned dates and 
+  data that includes the "#" character.
+
+|charts| v1.31
+--------------
+
+*Released March 28, 2022*
+
+Improvements in this release:
+
+- You can now create a sample dashboard from the 
+  :guilabel:`Add Dashboard` menu.
+
+Bug fixes in this release:
+
+- Fixes an issue where charts using aggregate functions would stop 
+  working.
+
+- Dropdown menus in the chart builder now display options correctly.
+
+- Fixes a bug where a product tours were incorrectly triggered when 
+  there were no dashboards on the :guilabel:`Dashboards` page.
+
+
 |charts| v1.30.1
 ----------------