diff --git a/doc/administration/config-cheat-sheet.en-us.md b/doc/administration/config-cheat-sheet.en-us.md
index 74110ea4..be97edad 100644
--- a/doc/administration/config-cheat-sheet.en-us.md
+++ b/doc/administration/config-cheat-sheet.en-us.md
@@ -117,7 +117,7 @@ In addition there is _`StaticRootPath`_ which can be set as a built-in at build
 
 ### Repository - Editor (`repository.editor`)
 
-- `LINE_WRAP_EXTENSIONS`: **.txt,.md,.markdown,.mdown,.mkd,**: List of file extensions for which lines should be wrapped in the Monaco editor. Separate extensions with a comma. To line wrap files without an extension, just put a comma
+- `LINE_WRAP_EXTENSIONS`: **.txt,.md,.markdown,.mdown,.mkd,.livemd,**: List of file extensions for which lines should be wrapped in the Monaco editor. Separate extensions with a comma. To line wrap files without an extension, just put a comma
 - `PREVIEWABLE_FILE_MODES`: **markdown**: Valid file modes that have a preview API associated with them, such as `api/v1/markdown`. Separate the values by commas. The preview tab in edit mode won't be displayed if the file extension doesn't match.
 
 ### Repository - Pull Request (`repository.pull-request`)
@@ -277,6 +277,7 @@ The following configuration set `Content-Type: application/vnd.android.package-a
 - `CUSTOM_URL_SCHEMES`: Use a comma separated list (ftp,git,svn) to indicate additional
   URL hyperlinks to be rendered in Markdown. URLs beginning in http and https are
   always displayed
+- `FILE_EXTENSIONS`: **.md,.markdown,.mdown,.mkd,.livemd**: List of file extensions that should be rendered/edited as Markdown. Separate the extensions with a comma. To render files without any extension as markdown, just put a comma.
 - `ENABLE_MATH`: **true**: Enables detection of `\(...\)`, `\[...\]`, `$...$` and `$$...$$` blocks as math blocks.
 
 ## Server (`server`)