Update lifecycle-identity.md (#488)

* Update lifecycle-identity.md

Version is only for Runme, not cells.

* Overwrite default identity of none using --identity flag

---------

Co-authored-by: Sebastian Tiedtke <sebastiantiedtke@gmail.com>

docs/configuration/lifecycle-identity.md

@@ -8,11 +8,11 @@ With this feature, you can easily track changes, versions, and the complete hist
 
 ### Usage
 
-The following metadata will be added to your Markdown file :
+The following metadata will be added to your Markdown file:
 
 `id`: The unique identifier that represents the specific instance of your document or cell.
 
-`version`: The current version number on your document or cell is the version of Runme you are using.
+`version`: The current version number on your document is the version of Runme you are using.
 
 Here is a sample of what the lifecycle identity on your file looks like:
 
@@ -25,7 +25,7 @@ runme:
 To manually add the lifecycle identity to your markdown file, use the following command:
 
 ```sh {"id":"01HYX1H6800B70SWHVG6MFMHFM"}
-runme fmt --write
+runme fmt --identity all --write
 ```
 
 > Note: Each document or cell will have a unique identifier generated by Runme. Do not edit these to avoid conflicts.