diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 0aed85df0..461b25d64 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -17,4 +17,4 @@
 
 ## Bug Fixes
 
-<!-- Here goes notable bug fixes that are worth a special mention or explanation -->
+- Fix rendering of diagrams in the documentation.
diff --git a/mkdocs.yml b/mkdocs.yml
index cd1540460..e30f87f17 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -76,7 +76,7 @@ markdown_extensions:
       custom_fences:
         - name: mermaid
           class: mermaid
-          format: "!!python/name:pymdownx.superfences.fence_code_format"
+          format: !!python/name:pymdownx.superfences.fence_code_format
   - pymdownx.tabbed
   - pymdownx.tasklist
   - toc: