add empty line

DOCUMENTATION/content/documentation/index.md

@@ -196,6 +196,7 @@ More [options](https://docs.docker.com/compose/reference/logs/)
 
 
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 <a name="PHP"></a>
 
 
@@ -221,6 +222,7 @@ docker build --no-cache {container-name}
 
 
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 <a name="Change-the-PHP-FPM-Version"></a>
 ## Change the (PHP-FPM) Version