doc: improve cc_write_files doc (#1916)

1 files changed, 6 insertions, 3 deletions

diff --git a/cloudinit/config/cc_write_files.py b/cloudinit/config/cc_write_files.py
index f7d89935..f59b2d54 100644
--- a/cloudinit/config/cc_write_files.py
+++ b/cloudinit/config/cc_write_files.py
@@ -37,15 +37,18 @@ meta: MetaSchema = {
         before being written. For empty file creation, content can be omitted.
 
     .. note::
-        if multiline data is provided, care should be taken to ensure that it
-        follows yaml formatting standards. to specify binary data, use the yaml
+        If multiline data is provided, care should be taken to ensure that it
+        follows yaml formatting standards. To specify binary data, use the yaml
         option ``!!binary``
 
     .. note::
         Do not write files under /tmp during boot because of a race with
         systemd-tmpfiles-clean that can cause temp files to get cleaned during
         the early boot process. Use /run/somedir instead to avoid race
-        LP:1707222."""
+        LP:1707222.
+
+    .. warning::
+       Existing files will be overridden."""
     ),
     "distros": ["all"],
     "examples": [