Blob Store compress default to true

Improved breaking changes documentation.

Author: henningandersen

docs/reference/migration/migrate_8_0/snapshots.asciidoc

@@ -13,10 +13,9 @@ Instead use the repository specific `compress` setting to enable compression. Se
 on the `compress` setting.
 
 [float]
-==== Compression of meta data files is now default on
+==== Compression of meta data files is now on by default
 
-Previously, the default value for `compress` was `false`. The default has been changed to `true`. This aligns the
-default with documentation.
+Previously, the default value for `compress` was `false`. The default has been changed to `true`.
 
 This change will affect both newly created repositories and existing repositories where `compress=false` has not been
 explicitly specified.